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Color-Select O-Rings - Stock

Color-Select O-Rings, our industry standard color Identification O-Rings.

Buna-N (Nitrile) 70D, easy O-Ring size identification!!!!!  Buna-N O-Rings are the most common and the simplest types of seal with an excellent sealing property and durability. Recommended for use with crude oil, gasoline, propane, petroleum oils and water. It is used in engines, gearboxes and also can be found in anything from shower heads, garden hoses, pumps up to an aircraft. Nitrile O-Rings are used as a face to face gasket style seal or as a shaft seal, and allow both rotary and linear movement

Operating temperature: -40° to +250F°

Size not listed, special requirements or large quantities please click this link to Request a Price Quote.




Image Model+ Item Name Stock Price Quantity Discounts
2-003 Buna-N 70 O-Rings - Blue B70003-BLU

2-003 Buna-N 70 O-Rings - Blue

1/16"ID X 3/16"OD X 1/16"CS Blue O-Rings Buna-N - Nitrile (NBR) Duro 70: Nitrile, also known as Buna-N or NBR, is a copolymer of...
16746
$0.06

Add:
Min:  17
Quantity Discounts
17-777$0.06
778-4,999$0.05
5,000+$0.03
2-004 Buna-N 70 O-Rings - Red B70004-RED

2-004 Buna-N 70 O-Rings - Red

5/64"ID X 13/64"OD X 1/16"CS Red O-Rings Buna-N - Nitrile (NBR) Duro 70: Nitrile, also known as Buna-N or NBR, is a copolymer of...
18386
$0.06

Add:
Min:  9
Quantity Discounts
9-777$0.06
778-4,999$0.05
5,000+$0.03
2-005 Buna-N 70 O-Rings - White B70005-WHT

2-005 Buna-N 70 O-Rings - White

3/32"ID X 7/32"OD X 1/16"CS White O-Rings Buna-N - Nitrile (NBR) Duro 70: Nitrile, also known as Buna-N or NBR, is a copolymer of...
18291
$0.06

Add:
Min:  9
Quantity Discounts
9-777$0.06
778-4,999$0.05
5,000+$0.03
2-006 Buna-N 70 O-Rings - Orange B70006-ORG

2-006 Buna-N 70 O-Rings - Orange

1/8"ID X 1/4"OD X 1/16"CS Orange O-Rings Buna-N - Nitrile (NBR) Duro 70: Nitrile, also known as Buna-N or NBR, is a copolymer of...
12914
$0.06

Add:
Min:  9
Quantity Discounts
9-777$0.06
778-4,999$0.05
5,000+$0.03
2-007 Buna-N 70 O-Rings - Yellow B70007-YEL

2-007 Buna-N 70 O-Rings - Yellow

5/32"ID X 9/32"OD X 1/16"CS Yellow O-Rings Buna-N - Nitrile (NBR) Duro 70: Nitrile, also known as Buna-N or NBR, is a copolymer of...
22615
$0.06

Add:
Min:  9
Quantity Discounts
9-777$0.06
778-4,999$0.05
5,000+$0.03
2-008 Buna-N 70 O-Rings - Gray B70008-GRY

2-008 Buna-N 70 O-Rings - Gray

3/16"ID X 5/16"OD X 1/16"CS Gray O-Rings Buna-N - Nitrile (NBR) Duro 70: Nitrile, also known as Buna-N or NBR, is a copolymer of...
33510
$0.06

Add:
Min:  9
Quantity Discounts
9-777$0.06
778-4,999$0.05
5,000+$0.03
2-011 Buna-N 70 O-Rings - Pink B70011-PNK

2-011 Buna-N 70 O-Rings - Pink

5/16"ID X 7/16"OD X 1/16"CS Pink O-Rings Buna-N - Nitrile (NBR) Duro 70: Nitrile, also known as Buna-N or NBR, is a copolymer of...
24757
$0.06

Add:
Min:  9
Quantity Discounts
9-777$0.06
778-4,999$0.05
5,000+$0.03
2-012 Buna-N 70 O-Rings - Green B70012-GRN

2-012 Buna-N 70 O-Rings - Green

3/8"ID X 1/2"OD X 1/16"CS Green O-Rings Buna-N - Nitrile (NBR) Duro 70: Nitrile, also known as Buna-N or NBR, is a copolymer of...
37276
$0.06

Add:
Min:  9
Quantity Discounts
9-777$0.06
778-4,999$0.05
5,000+$0.03
2-013 Buna-N 70 O-Rings - Brown B70013-BRN

2-013 Buna-N 70 O-Rings - Brown

7/16"ID X 9/16"OD X 1/16"CS Brown O-Rings Buna-N - Nitrile (NBR) Duro 70: Nitrile, also known as Buna-N or NBR, is a copolymer of...
14076
$0.06

Add:
Min:  17
Quantity Discounts
17-777$0.06
778-4,999$0.05
5,000+$0.03
2-014 Buna-N 70 O-Rings - Blue B70014-BLU

2-014 Buna-N 70 O-Rings - Blue

1/2"ID X 5/8"OD X 1/16"CS Blue O-Rings Buna-N - Nitrile (NBR) Duro 70: Nitrile, also known as Buna-N or NBR, is a copolymer of...
30723
$0.08

Add:
Min:  13
Quantity Discounts
13-583$0.08
584-3,749$0.06
3,750+$0.04
2-015 Buna-N 70 O-Rings - Red B70015-RED

2-015 Buna-N 70 O-Rings - Red

9/16"ID X 11/16"OD X 1/16"CS Red O-Rings Buna-N - Nitrile (NBR) Duro 70: Nitrile, also known as Buna-N or NBR, is a copolymer of...
0
$0.08

Add:
Min:  7
Quantity Discounts
7-583$0.08
584-3,749$0.06
3,750+$0.04
2-016 Buna-N 70 O-Rings - White B70016-WHT

2-016 Buna-N 70 O-Rings - White

5/8"ID X 3/4"OD X 1/16"CS White O-Rings Buna-N - Nitrile (NBR) Duro 70: Nitrile, also known as Buna-N or NBR, is a copolymer of...
62512
$0.08

Add:
Min:  7
Quantity Discounts
7-583$0.08
584-3,749$0.06
3,750+$0.04
2-017 Buna-N 70 O-Rings - Orange B70017-ORG

2-017 Buna-N 70 O-Rings - Orange

11/16"ID X 13/16"OD X 1/16"CS Orange O-Rings Buna-N - Nitrile (NBR) Duro 70: Nitrile, also known as Buna-N or NBR, is a copolymer of...
10209
$0.08

Add:
Min:  7
Quantity Discounts
7-583$0.08
584-3,749$0.06
3,750+$0.04
2-018 Buna-N 70 O-Rings - Yellow B70018-YEL

2-018 Buna-N 70 O-Rings - Yellow

3/4"ID X 7/8"OD X 1/16"CS Yellow O-Rings Buna-N - Nitrile (NBR) Duro 70: Nitrile, also known as Buna-N or NBR, is a copolymer of...
6812
$0.08

Add:
Min:  7
Quantity Discounts
7-583$0.08
584-3,749$0.06
3,750+$0.04
2-019 Buna-N 70 O-Rings - Gray B70019-GRY

2-019 Buna-N 70 O-Rings - Gray

13/16"ID X 15/16"OD X 1/16"CS Gray O-Rings Buna-N - Nitrile (NBR) Duro 70: Nitrile, also known as Buna-N or NBR, is a copolymer of...
21211
$0.08

Add:
Min:  7
Quantity Discounts
7-583$0.08
584-3,749$0.06
3,750+$0.04
2-020 Buna-N 70 O-Rings - Tan B70020-TAN

2-020 Buna-N 70 O-Rings - Tan

7/8"ID X 1"OD X 1/16"CS Tan O-Rings Buna-N - Nitrile (NBR) Duro 70: Nitrile, also known as Buna-N or NBR, is a copolymer of Butadiene...
6224
$0.10

Add:
Min:  5
Quantity Discounts
5-466$0.10
467-2,999$0.08
3,000+$0.05
2-021 Buna-N 70 O-Rings - Purple B70021-PUR

2-021 Buna-N 70 O-Rings - Purple

15/16"ID X 1-1/16"OD X 1/16"CS Purple O-Rings Buna-N - Nitrile (NBR) Duro 70: Nitrile, also known as Buna-N or NBR, is a copolymer of...
9118
$0.10

Add:
Min:  5
Quantity Discounts
5-466$0.10
467-2,999$0.08
3,000+$0.05
2-022 Buna-N 70 O-Rings - Pink B70022-PNK

2-022 Buna-N 70 O-Rings - Pink

1"ID X 1-1/8"OD X 1/16"CS Pink O-Rings Buna-N - Nitrile (NBR) Duro 70: Nitrile, also known as Buna-N or NBR, is a copolymer of...
20400
$0.12

Add:
Min:  5
Quantity Discounts
5-388$0.12
389-2,499$0.09
2,500+$0.06
2-023 Buna-N 70 O-Rings - Green B70023-GRN

2-023 Buna-N 70 O-Rings - Green

1-1/16"ID X 1-3/16"OD X 1/16"CS Green O-Rings Buna-N - Nitrile (NBR) Duro 70: Nitrile, also known as Buna-N or NBR, is a copolymer of...
5193
$0.12

Add:
Min:  5
Quantity Discounts
5-388$0.12
389-2,499$0.09
2,500+$0.06
2-026 Buna-N 70 O-Rings - Red B70026-RED

2-026 Buna-N 70 O-Rings - Red

1-1/4"ID X 1-3/8"OD X 1/16"CS Red O-Rings Buna-N - Nitrile (NBR) Duro 70: Nitrile, also known as Buna-N or NBR, is a copolymer of...
3581
$0.12

Add:
Min:  5
Quantity Discounts
5-388$0.12
389-2,499$0.09
2,500+$0.06


What are the most common O-ring compounds?

We stock O-Rings in over 20 different compounds and durometers the following six are the standard rubber materials in a range of durometers (Shore A) hardness to satisfy practically any service condition:

Buna-N O-Rings / Nitrile O-Rings / NBR: Nitrile (Buna-N) is the most widely used elastomer due to its excellent resistance to petroleum products, operating temperature range (-40°F to +257°F) and one of the best performance-to-cost values. It's an ideal material for aerospace, automotive, propane and natural gas applications. Special Hydrogenated Nitrile (HNBR) compounds can improve resistance to direct ozone, sunlight, and weather exposure while increasing temperature range to +300°F.
AS-568 Buna-N O-Rings | Metric Buna-N O-Rings

Viton® O-Rings / FKM: Fluorocarbon (Viton®) exhibits exceptional resistance to chemicals, oils, temperature extremes (-13°F to +446°F), low compression set, low gas permeability and excellent aging characteristics. Applications include: aircraft engines, automotive fuel handling systems, and chemical processing industries. FKM is also suitable for high vacuum applications. It is not recommended for exposure to ketones, alkalis, and Skydrol® fluids. Custom compounds are available with improved chemical and low temperature resistance.
AS-568 Viton® O-Rings | Metric Viton® O-Rings

Ethylene-Propylene / EPDM O-Rings: EPDM has outstanding resistance to heat, water and steam, alkali, mild acidic and oxygenated solvents, ozone, and sunlight (-40ºF to +275ºF); but it is not recommended for gasoline, petroleum oil and grease, and hydrocarbon environments. This popular rubber compound is usually the first choice for low torque drive belt applications.
AS-568 EPDM O-Rings | Metric EPDM O-Rings

Silicone O-Rings / VMQ: In the Silicone family, you will find compounds which are superior as static seals in extreme temperature conditions. Standard compounds handle operating temperatures -85º to +400ºF. Silicone compounds are popular in food and medical applications because they are very clean and do not impart odor or taste. Special Phenyl silicones can be used down to -148°F.
AS-568 Silicone O-Rings | Metric Silicone O-Rings

Neoprene® O-Rings / CR: Neoprene (-40º to +250ºF) is reasonably priced and features good resistance to petroleum oils, ozone, sunlight and oxygen aging, relatively low compression set, good resilience and outstanding physical toughness. It is the preferred sealing material for the refrigeration industry because of its resistance to ammonia and Freon®.
AS-568 Neoprene® O-Rings