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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...
18
$0.97

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Quantity Discounts
1-48$0.97
49-309$0.73
310+$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...
26
$0.99

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Quantity Discounts
1-47$0.99
48-303$0.74
304+$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...
77
$1.15

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Quantity Discounts
1-40$1.15
41-260$0.86
261+$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...
31
$1.21

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Quantity Discounts
1-38$1.21
39-247$0.91
248+$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...
73
$1.25

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Quantity Discounts
1-37$1.25
38-239$0.94
240+$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...
183
$1.28

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Quantity Discounts
1-36$1.28
37-234$0.96
235+$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...
19
$1.32

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Quantity Discounts
1-35$1.32
36-227$0.99
228+$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...
74
$1.35

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Quantity Discounts
1-34$1.35
35-222$1.01
223+$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...
97
$1.79

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Quantity Discounts
1-26$1.79
27-167$1.34
168+$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...
88
$1.81

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Quantity Discounts
1-25$1.81
26-165$1.36
166+$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...
5
$2.04

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Quantity Discounts
1-22$2.04
23-147$1.53
148+$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...
11
$2.08

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Quantity Discounts
1-22$2.08
23-144$1.56
145+$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...
866
$2.13

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Quantity Discounts
1-21$2.13
22-140$1.60
141+$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...
15
$2.19

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Quantity Discounts
1-21$2.19
22-136$1.64
137+$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...
91
$3.26

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Quantity Discounts
1-14$3.26
15-92$2.45
93+$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
1-14$3.33
15-90$2.50
91+$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...
18
$3.42

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Quantity Discounts
1-13$3.42
14-87$2.57
88+$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...
48
$3.52

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Quantity Discounts
1-13$3.52
14-85$2.64
86+$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...
20
$4.64

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Quantity Discounts
1-10$4.64
11-64$3.48
65+$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
1-8$5.82
9-51$4.37
52+$2.91