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-300 Series - 3/16" CS - 0.210" CS

A general purpose, sulfur-cured Buna-N Nitrile O-Ring, the most commonly used elastomer for sealing products. Nitrile, also known as Buna-N or NBR, is a copolymer of Butadiene and Acrylonitirle. More than 50% of the Orings sold are Buna-N Nitrile Orings, commonly used in hydraulic/pneumatic motors, cylinders, pumps and valves.

Operating temperature: -40° to +250°F




Image Model+ Item Name Qty. Price Quantity Discounts
-329 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70329

-329 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

2"ID X 2-3/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
1602
$0.20

Add:
Min:  4
Quantity Discounts
4-233$0.20
234-1,499$0.15
1,500+$0.10
-330 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70330

-330 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

2-1/8"ID X 2-1/2"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
532
$0.22

Add:
Min:  4
Quantity Discounts
4-212$0.22
213-1,363$0.17
1,364+$0.11
-331 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70331

-331 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

2-1/4"ID X 2-5/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
911
$0.23

Add:
Min:  3
Quantity Discounts
3-202$0.23
203-1,304$0.17
1,305+$0.12
-332 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70332

-332 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

2-3/8"ID X 2-3/4"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
2464
$0.26

Add:
Min:  3
Quantity Discounts
3-179$0.26
180-1,153$0.20
1,154+$0.13
-333 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70333

-333 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

2-1/2"ID X 2-7/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
-10
$0.28

Add:
Min:  3
Quantity Discounts
3-166$0.28
167-1,071$0.21
1,072+$0.14
-334 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70334

-334 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

2-5/8"ID X 3"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
53
$0.29

Add:
Min:  3
Quantity Discounts
3-160$0.29
161-1,034$0.22
1,035+$0.15
-335 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70335

-335 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

2-3/4"ID X 3-1/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
561
$0.30

Add:
Min:  3
Quantity Discounts
3-155$0.30
156-999$0.23
1,000+$0.15
-336 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70336

-336 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

2-7/8"ID X 3-1/4"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
789
$0.30

Add:
Min:  3
Quantity Discounts
3-155$0.30
156-999$0.23
1,000+$0.15
-337 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70337

-337 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

3"ID X 3-3/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
45
$0.34

Add:
Min:  3
Quantity Discounts
3-137$0.34
138-882$0.26
883+$0.17
-338 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70338

-338 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

3-1/8"ID X 3-1/2"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
3831
$0.34

Add:
Min:  3
Quantity Discounts
3-137$0.34
138-882$0.26
883+$0.17
-339 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70339

-339 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

3-1/4"ID X 3-5/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
928
$0.36

Add:
Min:  3
Quantity Discounts
3-129$0.36
130-833$0.27
834+$0.18
-340 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70340

-340 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

3-3/8"ID X 3-3/4"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
945
$0.36

Add:
Min:  2
Quantity Discounts
2-129$0.36
130-833$0.27
834+$0.18
-341 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70341

-341 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

3-1/2"ID X 3-7/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
385
$0.36

Add:
Min:  2
Quantity Discounts
2-129$0.36
130-833$0.27
834+$0.18
-342 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70342

-342 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

3-5/8"ID X 4"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
396
$0.37

Add:
Min:  2
Quantity Discounts
2-126$0.37
127-810$0.28
811+$0.19
-343 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70343

-343 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

3-3/4"ID X 4-1/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
166
$0.39

Add:
Min:  2
Quantity Discounts
2-119$0.39
120-769$0.29
770+$0.20
-344 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70344

-344 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

3-7/8"ID X 4-1/4"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
1083
$0.41

Add:
Min:  2
Quantity Discounts
2-113$0.41
114-731$0.31
732+$0.21
-345 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70345

-345 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

4"ID X 4-3/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
1416
$0.43

Add:
Min:  2
Quantity Discounts
2-108$0.43
109-697$0.32
698+$0.22
-346 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70346

-346 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

4-1/8"ID X 4-1/2"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
1004
$0.43

Add:
Min:  2
Quantity Discounts
2-108$0.43
109-697$0.32
698+$0.22
-347 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70347

-347 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

4-1/4"ID X 4-5/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
355
$0.44

Add:
Min:  2
Quantity Discounts
2-106$0.44
107-681$0.33
682+$0.22
-348 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70348

-348 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

4-3/8"ID X 4-3/4"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
118
$0.44

Add:
Min:  2
Quantity Discounts
2-106$0.44
107-681$0.33
682+$0.22