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-300 Series - 3/16" CS - 0.210" 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
-369 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70369

-369 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

8"ID X 8-3/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
34
$0.97

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Quantity Discounts
1-34$0.97
35-204$0.73
205+$0.49
-370 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70370

-370 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

8-1/4"ID X 8-5/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
47
$0.99

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Quantity Discounts
1-34$0.99
35-199$0.74
200+$0.50
-371 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70371

-371 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

8-1/2"ID X 8-7/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
87
$1.15

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Quantity Discounts
1-29$1.15
30-174$0.86
175+$0.58
-372 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70372

-372 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

8-3/4"ID X 9-1/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
51
$1.21

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Quantity Discounts
1-29$1.21
30-164$0.91
165+$0.61
-373 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70373

-373 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

9"ID X 9-3/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
14
$1.25

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Quantity Discounts
1-29$1.25
30-159$0.94
160+$0.63
-374 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70374

-374 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

9-1/4"ID X 9-5/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
197
$1.28

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Quantity Discounts
1-29$1.28
30-159$0.96
160+$0.64
-375 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70375

-375 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

9-1/2"ID X 9-7/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
20
$1.32

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Quantity Discounts
1-29$1.32
30-154$0.99
155+$0.66
-376 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70376

-376 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

9-3/4"ID X 10-1/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
82
$1.35

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Quantity Discounts
1-24$1.35
25-149$1.01
150+$0.68
-377 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70377

-377 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

10"ID X 10-3/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
73
$1.79

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Quantity Discounts
1-19$1.79
20-114$1.34
115+$0.90
-378 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70378

-378 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

10-1/2"ID X 10-7/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
98
$1.81

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Quantity Discounts
1-19$1.81
20-109$1.36
110+$0.91
-379 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70379

-379 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

11"ID X 11-3/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
15
$2.04

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Quantity Discounts
1-16$2.04
17-97$1.53
98+$1.02
-380 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70380

-380 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

11-1/2"ID X 11-7/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
16
$2.08

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Quantity Discounts
1-16$2.08
17-95$1.56
96+$1.04
-381 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70381

-381 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

12"ID X 12-3/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
1058
$2.13

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Quantity Discounts
1-15$2.13
16-94$1.60
95+$1.07
-382 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70382

-382 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

13"ID X 13-3/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
20
$2.19

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Quantity Discounts
1-15$2.19
16-89$1.64
90+$1.10
-383 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70383

-383 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

14"ID X 14-3/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
101
$3.26

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Quantity Discounts
1-9$3.26
10-61$2.45
62+$1.63
-384 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70384

-384 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

15"ID X 15-3/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
18
$3.33

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Quantity Discounts
1-9$3.33
10-59$2.50
60+$1.67
-385 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70385

-385 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

16"ID X 16-3/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
30
$3.42

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Quantity Discounts
1-9$3.42
10-59$2.57
60+$1.71
-386 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70386

-386 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

16"ID X 16-3/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
56
$3.52

Add:

Quantity Discounts
1-9$3.52
10-56$2.64
57+$1.76
-387 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70387

-387 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

18"ID X 18 3/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
21
$4.64

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Quantity Discounts
1-7$4.64
8-42$3.48
43+$2.32
-388 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70388

-388 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

19"ID X 19-3/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
13
$5.82

Add:

Quantity Discounts
1-5$5.82
6-34$4.37
35+$2.91