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-300 Series - 0.210 - 3/16" CS




Image Model+ Item Name Stock Price Quantity Discounts
-309 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring B90309

-309 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring

O-ring Size: 7/16"ID X 13/16"OD X 3/16"CS Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is also...
1288
$0.07

Add:
Min:  8
Quantity Discounts
8-666$0.07
667-4,285$0.05
4,286+$0.04
-310 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring B90310

-310 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring

O-ring Size: 1/2"ID X 7/8"OD X 3/16"CS Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is also...
1252
$0.08

Add:
Min:  7
Quantity Discounts
7-583$0.08
584-3,749$0.06
3,750+$0.04
-311 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring B90311

-311 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring

O-ring Size: 9/16"ID X 15/16"OD X 3/16"CS Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is also...
1121
$0.09

Add:
Min:  6
Quantity Discounts
6-518$0.09
519-3,333$0.07
3,334+$0.05
-312 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring B90312

-312 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring

O-ring Size: 5/8"ID X 1"OD X 3/16"CS Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is also...
963
$0.09

Add:
Min:  6
Quantity Discounts
6-518$0.09
519-3,333$0.07
3,334+$0.05
-313 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring B90313

-313 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring

O-ring Size: 11/16"ID X 1 1/16"OD X 3/16"CS Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is...
38
$0.10

Add:
Min:  5
Quantity Discounts
5-466$0.10
467-2,999$0.08
3,000+$0.05
-314 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring B90314

-314 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring

O-ring Size: 3/4"ID X 1 1/8"OD X 3/16"CS Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is also...
396
$0.11

Add:
Min:  5
Quantity Discounts
5-424$0.11
425-2,727$0.08
2,728+$0.06
-315 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring B90315

-315 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring

O-ring Size: 13/16"ID X 1 3/16"OD X 3/16"CS Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is...
2016
$0.11

Add:
Min:  5
Quantity Discounts
5-424$0.11
425-2,727$0.08
2,728+$0.06
-316 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring B90316

-316 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring

O-ring Size: 7/8"ID X 1 1/4"OD X 3/16"CS Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is also...
2239
$0.12

Add:
Min:  5
Quantity Discounts
5-388$0.12
389-2,499$0.09
2,500+$0.06
-317 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring B90317

-317 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring

O-ring Size: 15/16"ID X 1 5/16"OD X 3/16"CS Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is...
732
$0.13

Add:
Min:  4
Quantity Discounts
4-358$0.13
359-2,307$0.10
2,308+$0.07
-318 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring B90318

-318 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring

O-ring Size: 1"ID X 1 3/8"OD X 3/16"CS Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is also...
445
$0.15

Add:
Min:  4
Quantity Discounts
4-311$0.15
312-1,999$0.11
2,000+$0.08
-319 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring B90319

-319 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring

O-ring Size: 1 1/16"ID X 1 7/16"OD X 3/16"CS Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is...
395
$0.15

Add:
Min:  4
Quantity Discounts
4-311$0.15
312-1,999$0.11
2,000+$0.08
-320 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring B90320

-320 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring

O-ring Size: 1 1/8"ID X 1 1/2"OD X 3/16"CS Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is...
82
$0.16

Add:
Min:  4
Quantity Discounts
4-291$0.16
292-1,874$0.12
1,875+$0.08
-321 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring B90321

-321 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring

O-ring Size: 1 3/16"ID X 1 9/16"OD X 3/16"CS Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is...
561
$0.17

Add:
Min:  3
Quantity Discounts
3-274$0.17
275-1,764$0.13
1,765+$0.09
-322 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring B90322

-322 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring

O-ring Size: 1 1/4"ID X 1 5/8"OD X 3/16"CS Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is...
808
$0.17

Add:
Min:  3
Quantity Discounts
3-274$0.17
275-1,764$0.13
1,765+$0.09
-323 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring B90323

-323 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring

O-ring Size: 1 5/16"ID X 1 11/16"OD X 3/16"CS Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is...
839
$0.18

Add:
Min:  3
Quantity Discounts
3-259$0.18
260-1,666$0.14
1,667+$0.09
-324 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring B90324

-324 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring

O-ring Size: 1 3/8"ID X 1 3/4"OD X 3/16"CS Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is...
345
$0.19

Add:
Min:  3
Quantity Discounts
3-245$0.19
246-1,578$0.14
1,579+$0.10
-325 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring B90325

-325 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring

O-ring Size: 1 1/2"ID X 1 7/8"OD X 3/16"CS Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is...
1237
$0.20

Add:
Min:  3
Quantity Discounts
3-233$0.20
234-1,499$0.15
1,500+$0.10
-326 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring B90326

-326 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring

O-ring Size: 1 5/8"ID X 2"OD X 3/16"CS Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is also...
214
$0.22

Add:
Min:  3
Quantity Discounts
3-212$0.22
213-1,363$0.17
1,364+$0.11
-327 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring B90327

-327 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring

O-ring Size: 1 3/4"ID X 2 1/8"OD X 3/16"CS Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is...
1513
$0.24

Add:
Min:  3
Quantity Discounts
3-194$0.24
195-1,249$0.18
1,250+$0.12
-328 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring B90328

-328 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring

O-ring Size: 1 7/8"ID X 2 1/4"OD X 3/16"CS Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is...
1056
$0.26

Add:
Min:  2
Quantity Discounts
2-179$0.26
180-1,153$0.20
1,154+$0.13


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