-400 Series - 0.275 -1/4" CS

50 Durometer, Commercial Grade Soft Buna-N O-Rings

Designed for applications requiring soft O-Ring sealing material. Primarily used as a low pressure static seal or gasket. Buna-N compound materials are "standard” for most O-Ring service. While they are not as strong as other Buna-N O-Rings, Soft Buna-N O-Rings require less force to make an effective seal and conform better to uneven surfaces. They are suitable for a broad range of fluids including oils, water, and mild chemicals.

Displaying 1 to 25 (of 41 Products)
Product Image Model Product Name Qty. Price Quantity Discounts
(image for) AS568-425 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50425
AS568-425 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...
 In Stock: 243
$2.650
Add:
Min Qty:  4
Quantity Discounts
4-19$2.650
20-999$1.059
1,000-9,999$0.794
10,000+$0.530
(image for) AS568-426 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50426
AS568-426 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...
 In Stock: 0
$2.680
Add:
Min Qty:  100
Quantity Discounts
100-199$2.680
200-999$1.069
1,000-9,999$0.802
10,000+$0.535
(image for) AS568-427 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50427
AS568-427 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...
 In Stock: 0
$2.810
Add:
Min Qty:  100
Quantity Discounts
100-199$2.810
200-999$1.124
1,000-9,999$0.843
10,000+$0.562
(image for) AS568-428 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50428
AS568-428 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...
 In Stock: 0
$2.870
Add:
Min Qty:  100
Quantity Discounts
100-199$2.870
200-999$1.148
1,000-9,999$0.861
10,000+$0.574
(image for) AS568-429 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50429
AS568-429 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...
 In Stock: 0
$2.900
Add:
Min Qty:  100
Quantity Discounts
100-199$2.900
200-999$1.160
1,000-9,999$0.870
10,000+$0.580
(image for) AS568-430 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50430
AS568-430 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...
 In Stock: 0
$2.940
Add:
Min Qty:  100
Quantity Discounts
100-199$2.940
200-999$1.173
1,000-9,999$0.880
10,000+$0.587
(image for) AS568-431 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50431
AS568-431 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...
 In Stock: 0
$2.970
Add:
Min Qty:  100
Quantity Discounts
100-199$2.970
200-999$1.187
1,000-9,999$0.890
10,000+$0.594
(image for) AS568-432 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50432
AS568-432 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...
 In Stock: 230
$3.000
Add:
Min Qty:  3
Quantity Discounts
3-19$3.000
20-999$1.199
1,000-9,999$0.900
10,000+$0.600
(image for) AS568-433 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50433
AS568-433 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...
 In Stock: 317
$3.030
Add:
Min Qty:  3
Quantity Discounts
3-19$3.030
20-999$1.212
1,000-9,999$0.909
10,000+$0.606
(image for) AS568-434 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50434
AS568-434 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...
 In Stock: 0
$3.070
Add:
Min Qty:  100
Quantity Discounts
100-199$3.070
200-499$1.225
500-4,999$0.919
5,000+$0.613
(image for) AS568-435 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50435
AS568-435 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...
 In Stock: 0
$3.130
Add:
Min Qty:  100
Quantity Discounts
100-199$3.130
200-499$1.252
500-4,999$0.939
5,000+$0.626
(image for) AS568-436 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50436
AS568-436 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...
 In Stock: 0
$3.200
Add:
Min Qty:  100
Quantity Discounts
100-199$3.200
200-499$1.277
500-4,999$0.958
5,000+$0.639
(image for) AS568-437 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50437
AS568-437 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...
 In Stock: 283
$3.260
Add:
Min Qty:  3
Quantity Discounts
3-9$3.260
10-499$1.303
500-4,999$0.978
5,000+$0.652
(image for) AS568-438 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50438
AS568-438 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...
 In Stock: 0
$3.330
Add:
Min Qty:  100
Quantity Discounts
100-199$3.330
200-499$1.329
500-4,999$0.997
5,000+$0.665
(image for) AS568-439 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50439
AS568-439 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...
 In Stock: 218
$3.360
Add:
Min Qty:  3
Quantity Discounts
3-9$3.360
10-499$1.342
500-4,999$1.007
5,000+$0.671
(image for) AS568-440 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50440
AS568-440 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...
 In Stock: 0
$4.590
Add:
Min Qty:  100
Quantity Discounts
100-199$4.590
200-499$1.834
500-4,999$1.376
5,000+$0.917
(image for) AS568-441 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50441
AS568-441 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...
 In Stock: 0
$4.620
Add:
Min Qty:  100
Quantity Discounts
100-199$4.620
200-499$1.845
500-4,999$1.384
5,000+$0.923
(image for) AS568-442 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50442
AS568-442 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...
 In Stock: 269
$4.680
Add:
Min Qty:  2
Quantity Discounts
2-9$4.680
10-499$1.870
500-4,999$1.403
5,000+$0.935
(image for) AS568-443 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50443
AS568-443 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...
 In Stock: 644
$4.810
Add:
Min Qty:  2
Quantity Discounts
2-9$4.810
10-499$1.922
500-4,999$1.442
5,000+$0.961
(image for) AS568-444 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50444
AS568-444 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...
 In Stock: 315
$4.940
Add:
Min Qty:  2
Quantity Discounts
2-9$4.940
10-499$1.974
500-4,999$1.481
5,000+$0.987
(image for) 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...
 In Stock: 0
$4.950
Add:
Min Qty:  100
Quantity Discounts
100-199$4.950
200-499$1.979
500-4,999$1.485
5,000+$0.990
(image for) 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...
 In Stock: 0
$5.040
Add:
Min Qty:  100
Quantity Discounts
100-199$5.040
200-499$2.016
500-4,999$1.512
5,000+$1.008
(image for) 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...
 In Stock: 0
$5.200
Add:
Min Qty:  100
Quantity Discounts
100-199$5.200
200-499$2.078
500-4,999$1.559
5,000+$1.039
(image for) 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...
 In Stock: -100
$5.460
Add:
Min Qty:  100
Quantity Discounts
100-199$5.460
200-499$2.182
500-4,999$1.637
5,000+$1.091
(image for) 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...
 In Stock: 0
$5.630
Add:
Min Qty:  100
Quantity Discounts
100-199$5.630
200-499$2.250
500-4,999$1.687
5,000+$1.125
Displaying 1 to 25 (of 41 Products)
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