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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
-309 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70309

-309 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

7/16"ID X 13/16"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
987
$0.06

Add:
Min:  13
Quantity Discounts
13-624$0.06
625-3,499$0.05
3,500+$0.03
-310 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70310

-310 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

1/2"ID X 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 as...
352
$0.06

Add:
Min:  13
Quantity Discounts
13-624$0.06
625-3,499$0.05
3,500+$0.03
-311 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70311

-311 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

9/16"ID X 15/16"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
798
$0.07

Add:
Min:  10
Quantity Discounts
10-624$0.07
625-3,499$0.05
3,500+$0.04
-312 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70312

-312 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

5/8"ID X 1"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
762
$0.08

Add:
Min:  10
Quantity Discounts
10-624$0.08
625-3,499$0.06
3,500+$0.04
-313 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70313

-313 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

11/16"ID X 1-1/16"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
1368
$0.08

Add:
Min:  9
Quantity Discounts
9-499$0.08
500-3,499$0.06
3,500+$0.04
-314 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70314

-314 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

3/4"ID X 1-1/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
-3099
$0.09

Add:
Min:  9
Quantity Discounts
9-499$0.09
500-3,499$0.07
3,500+$0.05
-315 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70315

-315 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

13/16"ID X 1-3/16"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
0
$0.09

Add:
Min:  9
Quantity Discounts
9-499$0.09
500-3,499$0.07
3,500+$0.05
-316 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70316

-316 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

7/8"ID X 1-1/4"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
963
$0.10

Add:
Min:  8
Quantity Discounts
8-499$0.10
500-2,499$0.08
2,500+$0.05
-317 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70317

-317 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

15/16"ID X 1-5/16"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
3915
$0.11

Add:
Min:  8
Quantity Discounts
8-499$0.11
500-2,499$0.08
2,500+$0.06
-318 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70318

-318 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

1"ID X 1-3/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
869
$0.11

Add:
Min:  7
Quantity Discounts
7-424$0.11
425-2,499$0.08
2,500+$0.06
-319 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70319

-319 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

1-1/16"ID X 1-7/16"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
775
$0.12

Add:
Min:  7
Quantity Discounts
7-424$0.12
425-2,499$0.09
2,500+$0.06
-320 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70320

-320 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

1-1/8"ID X 1-1/2"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
165
$0.13

Add:
Min:  7
Quantity Discounts
7-359$0.13
360-1,999$0.10
2,000+$0.07
-321 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70321

-321 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

1-3/16"ID X 1-9/16"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
1647
$0.13

Add:
Min:  6
Quantity Discounts
6-359$0.13
360-1,999$0.10
2,000+$0.07
-322 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70322

-322 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

1-1/4"ID X 1-5/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
221
$0.14

Add:
Min:  6
Quantity Discounts
6-359$0.14
360-1,999$0.11
2,000+$0.07
-323 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70323

-323 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

1-5/16"ID X 1-11/16"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
863
$0.14

Add:
Min:  5
Quantity Discounts
5-314$0.14
315-1,999$0.11
2,000+$0.07
-324 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70324

-324 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

1-3/8"ID X 1-3/4"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
-60
$0.15

Add:
Min:  5
Quantity Discounts
5-314$0.15
315-1,999$0.11
2,000+$0.08
-325 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70325

-325 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

1-1/2"ID X 1-7/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
-55
$0.17

Add:
Min:  5
Quantity Discounts
5-314$0.17
315-1,999$0.13
2,000+$0.09
-326 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70326

-326 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

1-5/8"ID X 2"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
-15
$0.17

Add:
Min:  5
Quantity Discounts
5-314$0.17
315-1,669$0.13
1,670+$0.09
-327 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70327

-327 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

1-3/4"ID X 2-1/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
355
$0.17

Add:
Min:  5
Quantity Discounts
5-279$0.17
280-1,669$0.13
1,670+$0.09
-328 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70328

-328 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

1-7/8"ID X 2-1/4"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
368
$0.20

Add:
Min:  4
Quantity Discounts
4-169$0.20
170-999$0.15
1,000+$0.10