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-400 Series -1/4" CS - 0.275" CS

A general purpose, sulfur-cured Buna-N Nitrile O-Ring, the most commonly used elastomer for sealing products. Nitrile, also known as Buna-N or NBR, is a copolymer of Butadiene and Acrylonitirle. More than 50% of the Orings sold are Buna-N Nitrile Orings, commonly used in hydraulic/pneumatic motors, cylinders, pumps and valves.

Operating temperature: -40° to +250°F




Image Model+ Item Name Qty. Price Quantity Discounts
-420 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70420

-420 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

3-7/8"ID X 4-3/8"OD X 1/4"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
80
$2.50

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Quantity Discounts
1-14$2.50
15-79$1.88
80+$1.25
-421 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70421

-421 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

4"ID X 4-1/2"OD X 1/4"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
72
$2.50

Add:

Quantity Discounts
1-14$2.50
15-79$1.88
80+$1.25
-422 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70422

-422 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

4-1/8"ID X 4-5/8"OD X 1/4"CS   Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile,...
89
$2.50

Add:

Quantity Discounts
1-14$2.50
15-79$1.88
80+$1.25
-423 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70423

-423 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

4-1/4"ID X 4-3/4"OD X 1/4"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
157
$2.50

Add:

Quantity Discounts
1-14$2.50
15-79$1.88
80+$1.25
-424 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70424

-424 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

4-3/8"ID X 4-7/8"OD X 1/4"CS Buna-N O-Rings 70 Duro: Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing...
81
$2.50

Add:

Quantity Discounts
1-14$2.50
15-79$1.88
80+$1.25
-425 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70425

-425 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

4 1/2"ID X 5"OD X 1/4"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
45
$0.73

Add:

Quantity Discounts
1-49$0.73
50-274$0.55
275+$0.37
-426 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70426

-426 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

4 5/8"ID X 5 1/8"OD X 1/4"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
0
$0.75

Add:

Quantity Discounts
1-44$0.75
45-264$0.56
265+$0.38
-427 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70427

-427 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

4 3/4"ID X 5 1/4"OD X 1/4"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
97
$0.78

Add:

Quantity Discounts
1-44$0.78
45-259$0.59
260+$0.39
-428 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70428

-428 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

4 7/8"ID X 5 3/8"OD X 1/4"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
27
$0.79

Add:

Quantity Discounts
1-44$0.79
45-249$0.59
250+$0.40
-429 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70429

-429 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

5"ID X 5 1/2"OD X 1/4"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
132
$0.81

Add:

Quantity Discounts
1-44$0.81
45-244$0.61
245+$0.41
-430 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70430

-430 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

5 1/8"ID X 5 5/8"OD X 1/4"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
59
$0.84

Add:

Quantity Discounts
1-39$0.84
40-239$0.63
240+$0.42
-431 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70431

-431 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

5 1/4"ID X 5 3/4"OD X 1/4"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
330
$0.85

Add:

Quantity Discounts
1-39$0.85
40-234$0.64
235+$0.43
-432 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70432

-432 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

5 3/8"ID X 5 7/8"OD X 1/4"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
69
$0.87

Add:

Quantity Discounts
1-39$0.87
40-229$0.65
230+$0.44
-433 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70433

-433 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

5 1/2"ID X 6"OD X 1/4"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
54
$0.90

Add:

Quantity Discounts
1-39$0.90
40-224$0.68
225+$0.45
-434 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70434

-434 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

5 5/8"ID X 6 1/8"OD X 1/4"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
5
$0.92

Add:

Quantity Discounts
1-74$0.92
75-419$0.69
420+$0.46
-435 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70435

-435 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

5 3/4"ID X 6 1/4"OD X 1/4"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
39
$0.94

Add:

Quantity Discounts
1-39$0.94
40-214$0.71
215+$0.47
-436 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70436

-436 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

5 7/8"ID X 6 3/8"OD X 1/4"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
56
$0.96

Add:

Quantity Discounts
1-34$0.96
35-209$0.72
210+$0.48
-437 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70437

-437 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

6"ID X 6 1/2"OD X 1/4"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
95
$0.97

Add:

Quantity Discounts
1-34$0.97
35-204$0.73
205+$0.49
-438 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70438

-438 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

6 1/4"ID X 6 3/4"OD X 1/4"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
42
$1.00

Add:

Quantity Discounts
1-34$1.00
35-199$0.75
200+$0.50
-439 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70439

-439 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

6 1/2"ID X 7"OD X 1/4"CS Buna-N O-Rings 70 Duro: Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products....
43
$1.07

Add:

Quantity Discounts
1-34$1.07
35-189$0.80
190+$0.54