Collection: O-Rings - General Purpose

O-Rings -> General Purpose
Inside Diameter (ID) Section (t) Colour Hardness Indicative
Image
Inside Diameter (ID)
30.00
mm

(Equiv. 1.181 in.)
Section (t)
4.50
mm

(Equiv. 0.177 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 30x4.5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03000-450-N70 (2950 Pcs)
General Purpose O-Rings - 30x4.5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $1,542.68 AUD
Regular price Sale price $1,542.68 AUD
2950 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID) Section (t) Colour Hardness Indicative
Image
Inside Diameter (ID)
30.00
mm

(Equiv. 1.181 in.)
Section (t)
4.50
mm

(Equiv. 0.177 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 30x4.5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03000-450-N70 (2950 Pcs)
General Purpose O-Rings - 30x4.5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $1,542.68 AUD
Regular price Sale price $1,542.68 AUD
2950 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
30.00
mm

(Equiv. 1.181 in.)
Section (t)
5.00
mm

(Equiv. 0.197 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 30x5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03000-500-N70 (2500 Pcs)
General Purpose O-Rings - 30x5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $1,393.95 AUD
Regular price Sale price $1,393.95 AUD
2500 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
30.00
mm

(Equiv. 1.181 in.)
Section (t)
5.00
mm

(Equiv. 0.197 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 30x5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03000-500-N70 (2500 Pcs)
General Purpose O-Rings - 30x5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $1,393.95 AUD
Regular price Sale price $1,393.95 AUD
2500 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
30.00
mm

(Equiv. 1.181 in.)
Section (t)
6.00
mm

(Equiv. 0.236 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 30x6 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03000-600-N70 (1650 Pcs)
General Purpose O-Rings - 30x6 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $1,122.77 AUD
Regular price Sale price $1,122.77 AUD
1650 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
30.00
mm

(Equiv. 1.181 in.)
Section (t)
6.00
mm

(Equiv. 0.236 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 30x6 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03000-600-N70 (1650 Pcs)
General Purpose O-Rings - 30x6 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $1,122.77 AUD
Regular price Sale price $1,122.77 AUD
1650 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
30.50
mm

(Equiv. 1.201 in.)
Section (t)
1.50
mm

(Equiv. 0.059 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 30.5x1.5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03050-150-N70 (3500 Pcs)
General Purpose O-Rings - 30.5x1.5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $1,488.50 AUD
Regular price Sale price $1,488.50 AUD
3500 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
30.50
mm

(Equiv. 1.201 in.)
Section (t)
1.50
mm

(Equiv. 0.059 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 30.5x1.5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03050-150-N70 (3500 Pcs)
General Purpose O-Rings - 30.5x1.5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $1,488.50 AUD
Regular price Sale price $1,488.50 AUD
3500 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
30.50
mm

(Equiv. 1.201 in.)
Section (t)
2.00
mm

(Equiv. 0.079 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 30.5x2 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03050-200-N70 (2000 Pcs)
General Purpose O-Rings - 30.5x2 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $1,001.86 AUD
Regular price Sale price $1,001.86 AUD
2000 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
30.50
mm

(Equiv. 1.201 in.)
Section (t)
2.00
mm

(Equiv. 0.079 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 30.5x2 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03050-200-N70 (2000 Pcs)
General Purpose O-Rings - 30.5x2 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $1,001.86 AUD
Regular price Sale price $1,001.86 AUD
2000 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
30.50
mm

(Equiv. 1.201 in.)
Section (t)
2.50
mm

(Equiv. 0.098 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 30.5x2.5 mm - Black - Nitrile NBR, BUNA-N
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03050-250-N70 (10000 Pcs)
General Purpose O-Rings - 30.5x2.5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Contact Us | Special Order Only - Please contact us if you need a large quantity
Inside Diameter (ID)
30.50
mm

(Equiv. 1.201 in.)
Section (t)
2.50
mm

(Equiv. 0.098 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 30.5x2.5 mm - Black - Nitrile NBR, BUNA-N
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03050-250-N70 (10000 Pcs)
General Purpose O-Rings - 30.5x2.5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Contact Us | Special Order Only - Please contact us if you need a large quantity | Orders can be expected around Wed, Aug 09, 2028
Inside Diameter (ID)
30.50
mm

(Equiv. 1.201 in.)
Section (t)
3.00
mm

(Equiv. 0.118 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 30.5x3 mm - Black - Nitrile NBR, BUNA-N
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03050-300-N70 (10000 Pcs)
General Purpose O-Rings - 30.5x3 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Contact Us | Special Order Only - Please contact us if you need a large quantity
Inside Diameter (ID)
30.50
mm

(Equiv. 1.201 in.)
Section (t)
3.00
mm

(Equiv. 0.118 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 30.5x3 mm - Black - Nitrile NBR, BUNA-N
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03050-300-N70 (10000 Pcs)
General Purpose O-Rings - 30.5x3 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Contact Us | Special Order Only - Please contact us if you need a large quantity | Orders can be expected around Wed, Aug 09, 2028
Inside Diameter (ID)
30.80
mm

(Equiv. 1.213 in.)
Section (t)
3.60
mm

(Equiv. 0.142 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 30.8x3.6 mm - Black - Nitrile NBR, BUNA-N
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03080-360-N70 (10000 Pcs)
General Purpose O-Rings - 30.8x3.6 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Contact Us | Special Order Only - Please contact us if you need a large quantity
Inside Diameter (ID)
30.80
mm

(Equiv. 1.213 in.)
Section (t)
3.60
mm

(Equiv. 0.142 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 30.8x3.6 mm - Black - Nitrile NBR, BUNA-N
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03080-360-N70 (10000 Pcs)
General Purpose O-Rings - 30.8x3.6 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Contact Us | Special Order Only - Please contact us if you need a large quantity | Orders can be expected around Wed, Aug 09, 2028
Inside Diameter (ID)
31.00
mm

(Equiv. 1.22 in.)
Section (t)
1.50
mm

(Equiv. 0.059 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 31x1.5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03100-150-N70 (7750 Pcs)
General Purpose O-Rings - 31x1.5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $3,124.95 AUD
Regular price Sale price $3,124.95 AUD
7750 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
31.00
mm

(Equiv. 1.22 in.)
Section (t)
1.50
mm

(Equiv. 0.059 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 31x1.5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03100-150-N70 (7750 Pcs)
General Purpose O-Rings - 31x1.5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $3,124.95 AUD
Regular price Sale price $3,124.95 AUD
7750 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
31.00
mm

(Equiv. 1.22 in.)
Section (t)
2.00
mm

(Equiv. 0.079 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 31x2 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03100-200-N70 (6300 Pcs)
General Purpose O-Rings - 31x2 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $754.23 AUD
Regular price Sale price $754.23 AUD
6300 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
31.00
mm

(Equiv. 1.22 in.)
Section (t)
2.00
mm

(Equiv. 0.079 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 31x2 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03100-200-N70 (6300 Pcs)
General Purpose O-Rings - 31x2 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $754.23 AUD
Regular price Sale price $754.23 AUD
6300 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
31.00
mm

(Equiv. 1.22 in.)
Section (t)
2.50
mm

(Equiv. 0.098 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 31x2.5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03100-250-N70 (4900 Pcs)
General Purpose O-Rings - 31x2.5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $2,191.86 AUD
Regular price Sale price $2,191.86 AUD
4900 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
31.00
mm

(Equiv. 1.22 in.)
Section (t)
2.50
mm

(Equiv. 0.098 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 31x2.5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03100-250-N70 (4900 Pcs)
General Purpose O-Rings - 31x2.5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $2,191.86 AUD
Regular price Sale price $2,191.86 AUD
4900 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
31.00
mm

(Equiv. 1.22 in.)
Section (t)
3.00
mm

(Equiv. 0.118 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 31x3 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03100-300-N70 (4550 Pcs)
General Purpose O-Rings - 31x3 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $2,078.32 AUD
Regular price Sale price $2,078.32 AUD
4550 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
31.00
mm

(Equiv. 1.22 in.)
Section (t)
3.00
mm

(Equiv. 0.118 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 31x3 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03100-300-N70 (4550 Pcs)
General Purpose O-Rings - 31x3 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $2,078.32 AUD
Regular price Sale price $2,078.32 AUD
4550 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
31.00
mm

(Equiv. 1.22 in.)
Section (t)
3.50
mm

(Equiv. 0.138 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 31x3.5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03100-350-N70 (3950 Pcs)
General Purpose O-Rings - 31x3.5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $1,878.95 AUD
Regular price Sale price $1,878.95 AUD
3950 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
31.00
mm

(Equiv. 1.22 in.)
Section (t)
3.50
mm

(Equiv. 0.138 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 31x3.5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03100-350-N70 (3950 Pcs)
General Purpose O-Rings - 31x3.5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $1,878.95 AUD
Regular price Sale price $1,878.95 AUD
3950 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
31.00
mm

(Equiv. 1.22 in.)
Section (t)
4.00
mm

(Equiv. 0.157 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 31x4 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03100-400-N70 (3300 Pcs)
General Purpose O-Rings - 31x4 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $1,663.32 AUD
Regular price Sale price $1,663.32 AUD
3300 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
31.00
mm

(Equiv. 1.22 in.)
Section (t)
4.00
mm

(Equiv. 0.157 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 31x4 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03100-400-N70 (3300 Pcs)
General Purpose O-Rings - 31x4 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $1,663.32 AUD
Regular price Sale price $1,663.32 AUD
3300 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
31.00
mm

(Equiv. 1.22 in.)
Section (t)
4.50
mm

(Equiv. 0.177 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 31x4.5 mm - Black - Nitrile NBR, BUNA-N
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03100-450-N70 (5000 Pcs)
General Purpose O-Rings - 31x4.5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Contact Us | Special Order Only - Please contact us if you need a large quantity
Inside Diameter (ID)
31.00
mm

(Equiv. 1.22 in.)
Section (t)
4.50
mm

(Equiv. 0.177 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 31x4.5 mm - Black - Nitrile NBR, BUNA-N
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03100-450-N70 (5000 Pcs)
General Purpose O-Rings - 31x4.5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Contact Us | Special Order Only - Please contact us if you need a large quantity | Orders can be expected around Wed, Aug 09, 2028
Inside Diameter (ID)
31.00
mm

(Equiv. 1.22 in.)
Section (t)
5.00
mm

(Equiv. 0.197 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 31x5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03100-500-N70 (2450 Pcs)
General Purpose O-Rings - 31x5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $1,381.59 AUD
Regular price Sale price $1,381.59 AUD
2450 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
31.00
mm

(Equiv. 1.22 in.)
Section (t)
5.00
mm

(Equiv. 0.197 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 31x5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03100-500-N70 (2450 Pcs)
General Purpose O-Rings - 31x5 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $1,381.59 AUD
Regular price Sale price $1,381.59 AUD
2450 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
31.00
mm

(Equiv. 1.22 in.)
Section (t)
6.00
mm

(Equiv. 0.236 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 31x6 mm - Black - Nitrile NBR, BUNA-N
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03100-600-N70 (10000 Pcs)
General Purpose O-Rings - 31x6 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Contact Us | Special Order Only - Please contact us if you need a large quantity
Inside Diameter (ID)
31.00
mm

(Equiv. 1.22 in.)
Section (t)
6.00
mm

(Equiv. 0.236 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 31x6 mm - Black - Nitrile NBR, BUNA-N
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03100-600-N70 (10000 Pcs)
General Purpose O-Rings - 31x6 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Contact Us | Special Order Only - Please contact us if you need a large quantity | Orders can be expected around Wed, Aug 09, 2028
Inside Diameter (ID)
31.12
mm

(Equiv. 1.225 in.)
Section (t)
5.33
mm

(Equiv. 0.21 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 31.12x5.33 mm - Black - Neoprene Rubber
Material: Neoprene Rubber   
Category: O-Rings - General Purpose - Neoprene Rubber
Part Number: ORB-03112-533-CR70-322 (10000 Pcs)
General Purpose O-Rings - 31.12x5.33 mm - Black - Neoprene Rubber O-Ring
Contact Us | Special Order Only - Please contact us if you need a large quantity
Inside Diameter (ID)
31.12
mm

(Equiv. 1.225 in.)
Section (t)
5.33
mm

(Equiv. 0.21 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 31.12x5.33 mm - Black - Neoprene Rubber
Material: Neoprene Rubber   
Category: O-Rings - General Purpose - Neoprene Rubber
Part Number: ORB-03112-533-CR70-322 (10000 Pcs)
General Purpose O-Rings - 31.12x5.33 mm - Black - Neoprene Rubber O-Ring
Contact Us | Special Order Only - Please contact us if you need a large quantity | Orders can be expected around Wed, Aug 09, 2028
Inside Diameter (ID)
31.12
mm

(Equiv. 1.225 in.)
Section (t)
5.33
mm

(Equiv. 0.21 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 31.12x5.33 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03112-533-N70-322 (500 Pcs)
General Purpose O-Rings - 31.12x5.33 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $329.32 AUD
Regular price Sale price $329.32 AUD
500 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
31.12
mm

(Equiv. 1.225 in.)
Section (t)
5.33
mm

(Equiv. 0.21 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 31.12x5.33 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03112-533-N70-322 (500 Pcs)
General Purpose O-Rings - 31.12x5.33 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $329.32 AUD
Regular price Sale price $329.32 AUD
500 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
31.12
mm

(Equiv. 1.225 in.)
Section (t)
5.33
mm

(Equiv. 0.21 in.)
Colour
Black

Hardness
Duro 90
General Purpose O-Rings - 31.12x5.33 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03112-533-N90-322 (500 Pcs)
General Purpose O-Rings - 31.12x5.33 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $478.95 AUD
Regular price Sale price $478.95 AUD
500 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
31.12
mm

(Equiv. 1.225 in.)
Section (t)
5.33
mm

(Equiv. 0.21 in.)
Colour
Black

Hardness
Duro 90
General Purpose O-Rings - 31.12x5.33 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03112-533-N90-322 (500 Pcs)
General Purpose O-Rings - 31.12x5.33 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $478.95 AUD
Regular price Sale price $478.95 AUD
500 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
31.34
mm

(Equiv. 1.234 in.)
Section (t)
3.53
mm

(Equiv. 0.139 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 31.34x3.53 mm - Black - Neoprene Rubber
Material: Neoprene Rubber   
Category: O-Rings - General Purpose - Neoprene Rubber
Part Number: ORB-03134-353-CR70-218 (10000 Pcs)
General Purpose O-Rings - 31.34x3.53 mm - Black - Neoprene Rubber O-Ring
Contact Us | Special Order Only - Please contact us if you need a large quantity
Inside Diameter (ID)
31.34
mm

(Equiv. 1.234 in.)
Section (t)
3.53
mm

(Equiv. 0.139 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 31.34x3.53 mm - Black - Neoprene Rubber
Material: Neoprene Rubber   
Category: O-Rings - General Purpose - Neoprene Rubber
Part Number: ORB-03134-353-CR70-218 (10000 Pcs)
General Purpose O-Rings - 31.34x3.53 mm - Black - Neoprene Rubber O-Ring
Contact Us | Special Order Only - Please contact us if you need a large quantity | Orders can be expected around Wed, Aug 09, 2028
Inside Diameter (ID)
31.34
mm

(Equiv. 1.234 in.)
Section (t)
3.53
mm

(Equiv. 0.139 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 31.34x3.53 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03134-353-N70-218 (1500 Pcs)
General Purpose O-Rings - 31.34x3.53 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $467.86 AUD
Regular price Sale price $467.86 AUD
1500 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
31.34
mm

(Equiv. 1.234 in.)
Section (t)
3.53
mm

(Equiv. 0.139 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 31.34x3.53 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03134-353-N70-218 (1500 Pcs)
General Purpose O-Rings - 31.34x3.53 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $467.86 AUD
Regular price Sale price $467.86 AUD
1500 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
31.34
mm

(Equiv. 1.234 in.)
Section (t)
3.53
mm

(Equiv. 0.139 in.)
Colour
Black

Hardness
Duro 90
General Purpose O-Rings - 31.34x3.53 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03134-353-N90-218 (1000 Pcs)
General Purpose O-Rings - 31.34x3.53 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $645.86 AUD
Regular price Sale price $645.86 AUD
1000 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
31.34
mm

(Equiv. 1.234 in.)
Section (t)
3.53
mm

(Equiv. 0.139 in.)
Colour
Black

Hardness
Duro 90
General Purpose O-Rings - 31.34x3.53 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Material: Nitrile (NBR, BUNA-N)   
Category: O-Rings - General Purpose - Nitrile Rubber
Part Number: ORB-03134-353-N90-218 (1000 Pcs)
General Purpose O-Rings - 31.34x3.53 mm - Black Nitrile Rubber - Nitrile NBR, BUNA-N O-Ring
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 13, 2026
Regular price $645.86 AUD
Regular price Sale price $645.86 AUD
1000 Per Sell Unit
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Inside Diameter (ID)
31.42
mm

(Equiv. 1.237 in.)
Section (t)
2.62
mm

(Equiv. 0.103 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 31.42x2.62 mm - Black - Neoprene Rubber
Material: Neoprene Rubber   
Category: O-Rings - General Purpose - Neoprene Rubber
Part Number: ORB-03142-262-CR70-124 (10000 Pcs)
General Purpose O-Rings - 31.42x2.62 mm - Black - Neoprene Rubber O-Ring
Contact Us | Special Order Only - Please contact us if you need a large quantity
Inside Diameter (ID)
31.42
mm

(Equiv. 1.237 in.)
Section (t)
2.62
mm

(Equiv. 0.103 in.)
Colour
Black

Hardness
Duro 70
General Purpose O-Rings - 31.42x2.62 mm - Black - Neoprene Rubber
Material: Neoprene Rubber   
Category: O-Rings - General Purpose - Neoprene Rubber
Part Number: ORB-03142-262-CR70-124 (10000 Pcs)
General Purpose O-Rings - 31.42x2.62 mm - Black - Neoprene Rubber O-Ring
Contact Us | Special Order Only - Please contact us if you need a large quantity | Orders can be expected around Wed, Aug 09, 2028