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-100 Series - 0.103 - 3/32" CS

50 Durometer, Commercial Grade Soft Buna-N

Designed for applications requiring soft O-ring sealing material. Primarily used as a low pressure static seal or gasket. B50 O-rings not in stock may take up to 7 weeks to ship. 6" ID & larger Vulcanized O-Rings available to reduce delivery times and minimum orders. Link to order B50 Vulcanized O-Rings.

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
-102 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50102

-102 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

1/16"ID X 1/4"OD X 3/32"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
0
$0.09

Add:
Min:  2223
Quantity Discounts
2223-5,185$0.09
5,186-33,333$0.07
33,334+$0.05
-103 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50103

-103 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

3/32"ID X 9/32"OD X 3/32"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
0
$0.09

Add:
Min:  2223
Quantity Discounts
2223-5,185$0.09
5,186-33,333$0.07
33,334+$0.05
-104 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50104

-104 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

1/8"ID X 5/16"OD X 3/32"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
44
$0.09

Add:
Min:  6
Quantity Discounts
6-5,185$0.09
5,186-33,333$0.07
33,334+$0.05
-105 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50105

-105 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

5/32"ID X 11/32"OD X 3/32"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
0
$0.09

Add:
Min:  2223
Quantity Discounts
2223-5,185$0.09
5,186-33,333$0.07
33,334+$0.05
-106 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50106

-106 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

3/16"ID X 3/8"OD X 3/32"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
1512
$0.09

Add:
Min:  6
Quantity Discounts
6-518$0.09
519-3,333$0.07
3,334+$0.05
-107 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50107

-107 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

7/32"ID X 13/32"OD X 3/32"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
0
$0.09

Add:
Min:  6
Quantity Discounts
6-518$0.09
519-3,333$0.07
3,334+$0.05
-108 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50108

-108 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

1/4"ID X 7/16"OD X 3/32"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
0
$0.09

Add:
Min:  6
Quantity Discounts
6-518$0.09
519-3,333$0.07
3,334+$0.05
-109 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50109

-109 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as Buna-N or NBR, is a copolymer of...
65094
$0.09

Add:
Min:  6
Quantity Discounts
6-518$0.09
519-3,333$0.07
3,334+$0.05
-110 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50110

-110 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

3/8"ID X 9/16"OD X 3/32"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
35016
$0.09

Add:
Min:  6
Quantity Discounts
6-518$0.09
519-3,333$0.07
3,334+$0.05
-111 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50111

-111 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

7/16"ID X 5/8"OD X 3/32"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
34861
$0.09

Add:
Min:  6
Quantity Discounts
6-518$0.09
519-3,333$0.07
3,334+$0.05
-112 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50112

-112 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

1/2"ID X 11/16"OD X 3/32"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
36767
$0.09

Add:
Min:  6
Quantity Discounts
6-518$0.09
519-3,333$0.07
3,334+$0.05
-113 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50113

-113 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

9/16"ID X 3/4"OD X 3/32"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
24711
$0.09

Add:
Min:  6
Quantity Discounts
6-518$0.09
519-3,333$0.07
3,334+$0.05
-114 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50114

-114 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

5/8"ID X 13/16"OD X 3/32"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
16005
$0.09

Add:
Min:  6
Quantity Discounts
6-518$0.09
519-3,333$0.07
3,334+$0.05
-115 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50115

-115 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

11/16"ID X 7/8"OD X 3/32"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
22211
$0.09

Add:
Min:  6
Quantity Discounts
6-518$0.09
519-3,333$0.07
3,334+$0.05
-116 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50116

-116 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

3/4"ID X 15/16"OD X 3/32"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
7974
$0.10

Add:
Min:  5
Quantity Discounts
5-466$0.10
467-2,999$0.08
3,000+$0.05
-117 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50117

-117 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

13/16"ID X 1"OD X 3/32"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
619
$0.11

Add:
Min:  5
Quantity Discounts
5-424$0.11
425-2,727$0.08
2,728+$0.06
-118 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50118

-118 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

7/8"ID X 1-1/16"OD X 3/32"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
5333
$0.12

Add:
Min:  5
Quantity Discounts
5-388$0.12
389-2,499$0.09
2,500+$0.06
-119 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50119

-119 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

15/16"ID X 1-1/8"OD X 3/32"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
1338
$0.13

Add:
Min:  4
Quantity Discounts
4-358$0.13
359-2,307$0.10
2,308+$0.07
-120 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50120

-120 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

1"ID X 1-3/16"OD X 3/32"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
40
$0.14

Add:
Min:  4
Quantity Discounts
4-333$0.14
334-2,142$0.11
2,143+$0.07
-121 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50121

-121 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

1-1/16"ID X 1-1/4"OD X 3/32"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
6728
$0.15

Add:
Min:  4
Quantity Discounts
4-311$0.15
312-1,999$0.11
2,000+$0.08


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