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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
-425 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50425

-425 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

4-1/2" ID X 5" OD X 1/4" CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
100
$1.67

Add:

Quantity Discounts
1-19$1.67
20-119$1.25
120+$0.84
-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:  148
Quantity Discounts
148-787$1.69
788-2,941$1.27
2,942+$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:  139
Quantity Discounts
139-740$1.80
741-2,777$1.35
2,778+$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:  136
Quantity Discounts
136-724$1.84
725-2,717$1.38
2,718+$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:  135
Quantity Discounts
135-714$1.86
715-2,688$1.40
2,689+$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:  133
Quantity Discounts
133-704$1.89
705-2,631$1.42
2,632+$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:  131
Quantity Discounts
131-694$1.91
695-2,604$1.43
2,605+$0.96
-432 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50432

-432 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

5-3/8" ID X 5-7/8" OD X 1/4" CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
94
$1.94

Add:

Quantity Discounts
1-17$1.94
18-103$1.46
104+$0.97
-433 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50433

-433 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

5-1/2" ID X 6" OD X 1/4" CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
458
$1.96

Add:

Quantity Discounts
1-17$1.96
18-102$1.47
103+$0.98
-434 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50434

-434 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

5-5/8" ID X 6-1/8" OD X 1/4" CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
12
$1.99

Add:

Quantity Discounts
1-16$1.99
17-99$1.49
100+$1.00
-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:

Quantity Discounts
1-653$2.04
654-2,450$1.53
2,451+$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:  120
Quantity Discounts
120-636$2.09
637-2,380$1.57
2,381+$1.05
-437 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50437

-437 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

6" ID X 6-1/2" OD X 1/4" CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
505
$2.13

Add:

Quantity Discounts
1-624$2.13
625-2,336$1.60
2,337+$1.07
-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:  115
Quantity Discounts
115-609$2.18
610-2,293$1.64
2,294+$1.09
-439 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50439

-439 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

6-1/2" ID X 7" OD X 1/4" CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
499
$2.21

Add:

Quantity Discounts
1-602$2.21
603-2,252$1.66
2,253+$1.11
-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:  88
Quantity Discounts
88-462$2.87
463-1,736$2.15
1,737+$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:  87
Quantity Discounts
87-460$2.89
461-1,724$2.17
1,725+$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:  86
Quantity Discounts
86-452$2.94
453-1,700$2.21
1,701+$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:  83
Quantity Discounts
83-438$3.04
439-1,644$2.28
1,645+$1.52
-444 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50444

-444 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

7-3/4" ID X 8-1/4" OD X 1/4" CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
345
$3.14

Add:

Quantity Discounts
1-424$3.14
425-1,592$2.36
1,593+$1.57
-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:

Quantity Discounts
1-421$3.15
422-1,852$2.36
1,853+$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:

Quantity Discounts
1-413$3.22
414-1,552$2.42
1,553+$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:

Quantity Discounts
1-398$3.34
399-1,497$2.51
1,498+$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:

Quantity Discounts
1-377$3.53
378-1,412$2.65
1,413+$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:

Quantity Discounts
1-363$3.66
364-1,366$2.75
1,367+$1.83
-450 B50 Buna-N Rubber Vulcanized O-ring B50450

-450 B50 Buna-N Rubber Vulcanized 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...
-2
$5.69

Add:

Quantity Discounts
1-234$5.69
235-877$4.27
878+$2.85
-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:

Quantity Discounts
1-231$5.75
232-868$4.31
869+$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:

Quantity Discounts
1-228$5.84
229-856$4.38
857+$2.92
-453 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50453

-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...
151
$5.90

Add:

Quantity Discounts
1-5$5.90
6-33$4.43
34+$2.95
-454 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50454

-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...
129
$5.97

Add:

Quantity Discounts
1-5$5.97
6-33$4.48
34+$2.99
-455 B50 Buna-N Rubber Vulcanized O-Ring B50455

-455 B50 Buna-N Rubber Vulcanized 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:

Quantity Discounts
1-220$6.05
221-825$4.54
826+$3.03
-456 B50 Buna-N Rubber Vulcanized O-Ring B50456

-456 B50 Buna-N Rubber Vulcanized 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:

Quantity Discounts
1-217$6.13
218-814$4.60
815+$3.07
-457 B50 Buna-N Rubber Vulcanized O-Ring B50457

-457 B50 Buna-N Rubber Vulcanized 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:

Quantity Discounts
1-214$6.21
215-803$4.66
804+$3.11
-458 B50 Buna-N Rubber Vulcanized O-Ring B50458

-458 B50 Buna-N Rubber Vulcanized 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:

Quantity Discounts
1-210$6.31
211-791$4.73
792+$3.16
-459 B50 Buna-N Rubber Vulcanized O-Ring B50459

-459 B50 Buna-N Rubber Vulcanized 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...
1
$6.36

Add:

Quantity Discounts
1-209$6.36
210-786$4.77
787+$3.18
-460 B50 Buna-N Rubber Vulcanized O-Ring B50460

-460 B50 Buna-N Rubber Vulcanized 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:

Quantity Discounts
1-147$9.06
148-551$6.80
552+$4.53
-461 B50 Buna-N Rubber Vulcanized O-ring B50461

-461 B50 Buna-N Rubber Vulcanized 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:

Quantity Discounts
1-144$9.23
145-541$6.92
542+$4.62
-462 B50 Buna-N Rubber Vulcanized O-ring B50462

-462 B50 Buna-N Rubber Vulcanized 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:

Quantity Discounts
1-144$9.23
145-541$6.92
542+$4.62
-463 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50463

-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
1-3$9.28
4-21$6.96
22+$4.64
-464 B50 Buna-N Rubber Vulcanized O-Ring B50464

-464 B50 Buna-N Rubber Vulcanized 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:

Quantity Discounts
1-143$9.32
144-536$6.99
537+$4.66
-465 B50 Buna-N Rubber Vulcanized O-Ring B50465

-465 B50 Buna-N Rubber Vulcanized O-Ring

18"ID X 18-1/2"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
$9.38

Add:

Quantity Discounts
1-142$9.38
143-533$7.04
534+$4.69
5" to 12" ID X 0.275" (7.00mm) C/S Buna-N 50 Vulcanized O-Ring VN50.275-012

5" to 12" ID X 0.275" (7.00mm) C/S Buna-N 50 Vulcanized 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
$7.50



Quantity Discounts
1$7.50
2-11$6.75
12+$5.63
12" to 18" ID X 0.275" (7.00mm) C/S Buna-N 50 Vulcanized O-Ring VN50.275-018

12" to 18" ID X 0.275" (7.00mm) C/S Buna-N 50 Vulcanized 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
$8.00



Quantity Discounts
1$8.00
2-11$7.20
12+$6.00
18" to 24" ID X 0.275" (7.00mm) C/S Buna-N 50 Vulcanized O-Ring VN50.275-024

18" to 24" ID X 0.275" (7.00mm) C/S Buna-N 50 Vulcanized 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
$10.00



Quantity Discounts
1$10.00
2-11$9.00
12+$7.50
24" to 30" ID X 0.275" (7.00mm) C/S Buna-N 50 Vulcanized O-Ring VN50.275-030

24" to 30" ID X 0.275" (7.00mm) C/S Buna-N 50 Vulcanized 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
$11.00



Quantity Discounts
1$11.00
2-11$9.90
12+$8.25
30" to 36" ID X 0.275" (7.00mm) C/S Buna-N 50 Vulcanized O-Ring VN50.275-036

30" to 36" ID X 0.275" (7.00mm) C/S Buna-N 50 Vulcanized 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
$14.00



Quantity Discounts
1$14.00
2-11$12.60
12+$10.50