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-400 Series - 0.275 -1/4" 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 Qty.+ Price Quantity Discounts
-426 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50426

-426 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

4-5/8" ID X 5-1/8" OD X 1/4" CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
0
$1.69

Add:
Min:  119
Quantity Discounts
119-276$1.69
277-1,775$1.27
1,776+$0.85
-427 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50427

-427 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

4-3/4" ID X 5-1/4" OD X 1/4" CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
0
$1.80

Add:
Min:  112
Quantity Discounts
112-259$1.80
260-1,666$1.35
1,667+$0.90
-428 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50428

-428 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

4-7/8" ID X 5-3/8" OD X 1/4" CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
0
$1.84

Add:
Min:  109
Quantity Discounts
109-253$1.84
254-1,630$1.38
1,631+$0.92
-429 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50429

-429 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

5" ID X 5-1/2" OD X 1/4" CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
0
$1.86

Add:
Min:  108
Quantity Discounts
108-250$1.86
251-1,612$1.40
1,613+$0.93
-430 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50430

-430 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

5-1/8" ID X 5-5/8" OD X 1/4" CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
0
$1.89

Add:
Min:  106
Quantity Discounts
106-246$1.89
247-1,587$1.42
1,588+$0.95
-431 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50431

-431 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

5-1/4" ID X 5-3/4" OD X 1/4" CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
0
$1.91

Add:
Min:  105
Quantity Discounts
105-244$1.91
245-1,570$1.43
1,571+$0.96
-435 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50435

-435 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

5-3/4" ID X 6-1/4" OD X 1/4" CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
0
$2.04

Add:
Min:  99
Quantity Discounts
99-228$2.04
229-1,470$1.53
1,471+$1.02
-436 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50436

-436 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

5-7/8" ID X 6-3/8" OD X 1/4" CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
0
$2.09

Add:
Min:  96
Quantity Discounts
96-223$2.09
224-1,435$1.57
1,436+$1.05
-438 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50438

-438 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

6-1/4"ID X 6-3/4"OD X 1/4"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
0
$2.18

Add:
Min:  92
Quantity Discounts
92-214$2.18
215-1,376$1.64
1,377+$1.09
-440 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50440

-440 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

6-3/4" ID X 7-1/4" OD X 1/4" CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
0
$2.87

Add:
Min:  70
Quantity Discounts
70-162$2.87
163-1,045$2.15
1,046+$1.44
-441 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50441

-441 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

7" ID X 7-1/2" OD X 1/4" CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
0
$2.89

Add:
Min:  70
Quantity Discounts
70-161$2.89
162-1,038$2.17
1,039+$1.45
-442 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50442

-442 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

7-1/4" ID X 7-3/4" OD X 1/4" CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
0
$2.94

Add:
Min:  69
Quantity Discounts
69-158$2.94
159-1,020$2.21
1,021+$1.47
-443 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50443

-443 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

7-1/2" ID X 8" OD X 1/4" CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
0
$3.04

Add:
Min:  66
Quantity Discounts
66-153$3.04
154-986$2.28
987+$1.52
-445 B50 Buna-N Rubber Vulcanized O-ring B50445

-445 B50 Buna-N Rubber Vulcanized O-ring

8"ID X 8-1/2"OD X 1/4"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
0
$3.15

Add:
Min:  64
Quantity Discounts
64-148$3.15
149-952$2.36
953+$1.58
-446 B50 Buna-N Rubber Vulcanized O-ring B50446

-446 B50 Buna-N Rubber Vulcanized O-ring

8-1/2"ID X 9"OD X 1/4"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
0
$3.22

Add:
Min:  63
Quantity Discounts
63-144$3.22
145-931$2.42
932+$1.61
-447 B50 Buna-N Rubber Vulcanized O-ring B50447

-447 B50 Buna-N Rubber Vulcanized O-ring

9"ID X 9-1/2"OD X 1/4"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
0
$3.34

Add:
Min:  60
Quantity Discounts
60-139$3.34
140-898$2.51
899+$1.67
-448 B50 Buna-N Rubber Vulcanized O-ring B50448

-448 B50 Buna-N Rubber Vulcanized O-ring

9-1/2"ID X 10"OD X 1/4"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
0
$3.53

Add:
Min:  57
Quantity Discounts
57-132$3.53
133-849$2.65
850+$1.77
-449 B50 Buna-N Rubber Vulcanized O-ring B50449

-449 B50 Buna-N Rubber Vulcanized O-ring

10"ID X 10-1/2"OD X 1/4"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
0
$3.66

Add:
Min:  55
Quantity Discounts
55-127$3.66
128-819$2.75
820+$1.83
-451 B50 Buna-N Rubber Vulcanized O-ring B50451

-451 B50 Buna-N Rubber Vulcanized O-ring

11"ID X 11-1/2"OD X 1/4"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
0
$5.75

Add:
Min:  35
Quantity Discounts
35-81$5.75
82-521$4.31
522+$2.88
-452 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50452

-452 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

11-1/2"ID X 12"OD X 1/4"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
0
$5.84

Add:
Min:  35
Quantity Discounts
35-79$5.84
80-513$4.38
514+$2.92