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-300 Series - 0.210 - 3/16" 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+
AS568-309 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50309

AS568-309 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

7/16"ID X 13/16"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
0
$0.42

Add:
Min:  477
Quantity Discounts
477-1,111$0.42
1,112-7,142$0.32
7,143+$0.21
AS568-310 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50310

AS568-310 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

1/2"ID X 7/8"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
0
$0.48

Add:
Min:  417
Quantity Discounts
417-972$0.48
973-6,249$0.36
6,250+$0.24
AS568-327 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50327

AS568-327 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

1-3/4"ID X 2-1/8"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
96
$1.45

Add:

Quantity Discounts
1-321$1.45
322-2,068$1.09
2,069+$0.73
AS568-328 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50328

AS568-328 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

1-7/8"ID X 2-1/4"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
47
$1.45

Add:

Quantity Discounts
1-321$1.45
322-2,068$1.09
2,069+$0.73
AS568-329 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50329

AS568-329 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

2"ID X 2-3/8"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
929
$1.66

Add:
Min:  121
Quantity Discounts
121-281$1.66
282-1,807$1.25
1,808+$0.83
AS568-330 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50330

AS568-330 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

2-1/8"ID X 2-1/2"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
3815
$1.74

Add:

Quantity Discounts
1-268$1.74
269-1,724$1.31
1,725+$0.87
AS568-347 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50347

AS568-347 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...
0
$3.79

Add:
Min:  53
Quantity Discounts
53-123$3.79
124-791$2.84
792+$1.90
AS568-348 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50348

AS568-348 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

4-3/8"ID X 4-3/4"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
0
$3.81

Add:
Min:  53
Quantity Discounts
53-122$3.81
123-787$2.86
788+$1.91
AS568-349 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50349

AS568-349 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

4-1/2"ID X 4-7/8"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
0
$3.83

Add:
Min:  53
Quantity Discounts
53-121$3.83
122-783$2.87
784+$1.92
AS568-350 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50350

AS568-350 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

4-5/8"ID X 5"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
0
$3.93

Add:
Min:  51
Quantity Discounts
51-118$3.93
119-763$2.95
764+$1.97
AS568-311 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50311

AS568-311 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

9/16"ID X 15/16"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
118526
$0.51

Add:

Quantity Discounts
1-915$0.51
916-5,882$0.38
5,883+$0.26
AS568-312 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50312

AS568-312 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

5/8"ID X 1"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
0
$0.56

Add:
Min:  358
Quantity Discounts
358-833$0.56
834-5,357$0.42
5,358+$0.28
AS568-313 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50313

AS568-313 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

11/16"ID X 1-1/16"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
0
$0.61

Add:
Min:  328
Quantity Discounts
328-765$0.61
766-4,918$0.46
4,919+$0.31
AS568-314 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50314

AS568-314 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

3/4"ID X 1-1/8"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
7
$0.64

Add:
Min:  313
Quantity Discounts
313-729$0.64
730-4,687$0.48
4,688+$0.32
AS568-315 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50315

AS568-315 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

13/16"ID X 1-3/16"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
0
$0.68

Add:
Min:  295
Quantity Discounts
295-686$0.68
687-4,411$0.51
4,412+$0.34
AS568-316 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50316

AS568-316 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

7/8"ID X 1-1/4"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
0
$0.71

Add:
Min:  282
Quantity Discounts
282-657$0.71
658-4,225$0.53
4,226+$0.36
AS568-317 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50317

AS568-317 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

15/16"ID X 1-5/16"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
0
$0.79

Add:
Min:  254
Quantity Discounts
254-590$0.79
591-3,797$0.59
3,798+$0.40
AS568-318 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50318

AS568-318 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

1"ID X 1-3/8"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
353
$0.85

Add:

Quantity Discounts
1-549$0.85
550-3,529$0.64
3,530+$0.43
AS568-319 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50319

AS568-319 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

1-1/16"ID X 1-7/16"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
0
$0.86

Add:
Min:  233
Quantity Discounts
233-542$0.86
543-3,488$0.65
3,489+$0.43
AS568-320 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50320

AS568-320 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

1-1/8"ID X 1-1/2"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
0
$0.91

Add:
Min:  220
Quantity Discounts
220-512$0.91
513-3,296$0.68
3,297+$0.46