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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 Stock Price Quantity Discounts
AS568-445 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50445

AS568-445 B50 (NBR) Buna-N Nitrile 50 Duro 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
AS568-446 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50446

AS568-446 B50 (NBR) Buna-N Nitrile 50 Duro 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
AS568-447 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50447

AS568-447 B50 (NBR) Buna-N Nitrile 50 Duro 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
AS568-448 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50448

AS568-448 B50 (NBR) Buna-N Nitrile 50 Duro 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
AS568-449 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50449

AS568-449 B50 (NBR) Buna-N Nitrile 50 Duro 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
AS568-450 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50450

AS568-450 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

10-1/2"ID X 11"OD X 1/4"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
95
$5.69

Add:

Quantity Discounts
1-82$5.69
83-527$4.27
528+$2.85
AS568-451 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50451

AS568-451 B50 (NBR) Buna-N Nitrile 50 Duro 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
AS568-452 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50452

AS568-452 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
AS568-453 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50453

AS568-453 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

12"ID X 12-1/2"OD X 1/4"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
141
$5.90

Add:

Quantity Discounts
1-79$5.90
80-508$4.43
509+$2.95
AS568-454 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50454

AS568-454 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

12-1/2"ID X 13"OD X 1/4"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
125
$5.97

Add:

Quantity Discounts
1-78$5.97
79-502$4.48
503+$2.99
AS568-455 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50455

AS568-455 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

13"ID X 13-1/2"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
$6.05

Add:
Min:  34
Quantity Discounts
34-77$6.05
78-495$4.54
496+$3.03
AS568-456 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50456

AS568-456 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

13-1/2" ID X 14" OD X 1/4" CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
0
$6.13

Add:
Min:  33
Quantity Discounts
33-76$6.13
77-489$4.60
490+$3.07
AS568-457 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50457

AS568-457 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

14"ID X 14-1/2"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
$6.21

Add:
Min:  33
Quantity Discounts
33-75$6.21
76-483$4.66
484+$3.11
AS568-458 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50458

AS568-458 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

14-1/2"ID X 15"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
$6.31

Add:
Min:  32
Quantity Discounts
32-73$6.31
74-475$4.73
476+$3.16
AS568-459 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50459

AS568-459 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

15"ID X 15-1/2"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
$6.36

Add:

Quantity Discounts
1-73$6.36
74-471$4.77
472+$3.18
AS568-460 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50460

AS568-460 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

15-1/2"ID X 16"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
$9.06

Add:
Min:  23
Quantity Discounts
23-51$9.06
52-331$6.80
332+$4.53
AS568-461 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50461

AS568-461 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

16"ID X 16-1/2"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
$9.23

Add:
Min:  22
Quantity Discounts
22-50$9.23
51-325$6.92
326+$4.62
AS568-462 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50462

AS568-462 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

16-1/2"ID X 17"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
$9.23

Add:
Min:  22
Quantity Discounts
22-50$9.23
51-325$6.92
326+$4.62
AS568-463 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50463

AS568-463 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

17"ID X 17-1/2"OD X 1/4"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
23
$9.28

Add:

Quantity Discounts
1-50$9.28
51-323$6.96
324+$4.64
AS568-464 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50464

AS568-464 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

17-1/2"ID X 18"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
$9.32

Add:
Min:  22
Quantity Discounts
22-50$9.32
51-321$6.99
322+$4.66