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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 Stock Price Quantity Discounts
AS568-349 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70349

AS568-349 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

4-1/2"ID X 4-7/8"OD X 3/16"CS Buna-N O-Rings 70 Duro: Nitrile, also known as Buna-N or NBR, is a copolymer of Butadiene and...
625
$0.48

Add:
Min:  2
Quantity Discounts
2-97$0.48
98-624$0.36
625+$0.24
AS568-350 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70350

AS568-350 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

4-5/8"ID X 5"OD X 3/16"CS Buna-N O-Rings 70 Duro: Nitrile, also known as Buna-N or NBR, is a copolymer of Butadiene and Acrylonitirle....
564
$0.49

Add:
Min:  2
Quantity Discounts
2-95$0.49
96-612$0.37
613+$0.25
AS568-351 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70351

AS568-351 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

4-3/4"ID X 5-1/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
97
$0.53

Add:
Min:  2
Quantity Discounts
2-88$0.53
89-566$0.40
567+$0.27
AS568-352 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70352

AS568-352 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

4-7/8"ID X 5-1/4"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
206
$0.54

Add:
Min:  2
Quantity Discounts
2-86$0.54
87-555$0.41
556+$0.27
AS568-353 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70353

AS568-353 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

5"ID X 5-3/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
123
$0.54

Add:
Min:  2
Quantity Discounts
2-86$0.54
87-555$0.41
556+$0.27
AS568-354 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70354

AS568-354 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

5-1/8"ID X 5-1/2"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
531
$0.54

Add:
Min:  2
Quantity Discounts
2-86$0.54
87-555$0.41
556+$0.27
AS568-355 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70355

AS568-355 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

5-1/4"ID X 5-5/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
522
$0.59

Add:
Min:  2
Quantity Discounts
2-79$0.59
80-508$0.44
509+$0.30
AS568-356 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70356

AS568-356 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

5-3/8"ID X 5-3/4"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
293
$0.67

Add:
Min:  2
Quantity Discounts
2-69$0.67
70-447$0.50
448+$0.34
AS568-357 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70357

AS568-357 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

5-1/2"ID X 5-7/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
68
$0.68

Add:
Min:  2
Quantity Discounts
2-68$0.68
69-441$0.51
442+$0.34
AS568-358 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70358

AS568-358 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

5-5/8"ID X 6"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
31
$0.71

Add:
Min:  2
Quantity Discounts
2-65$0.71
66-422$0.53
423+$0.36
AS568-359 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70359

AS568-359 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

5-3/4"ID X 6-1/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
0
$0.74

Add:
Min:  2
Quantity Discounts
2-63$0.74
64-405$0.56
406+$0.37
AS568-360 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70360

AS568-360 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

5-7/8"ID X 6-1/4"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
453
$0.78

Add:
Min:  2
Quantity Discounts
2-59$0.78
60-384$0.59
385+$0.39
AS568-361 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70361

AS568-361 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

6"ID X 6-3/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
153
$0.81

Add:
Min:  2
Quantity Discounts
2-57$0.81
58-370$0.61
371+$0.41
AS568-362 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70362

AS568-362 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

6-1/4"ID X 6-5/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
130
$0.84

Add:
Min:  2
Quantity Discounts
2-55$0.84
56-357$0.63
358+$0.42
AS568-363 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70363

AS568-363 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

6-1/2"ID X 6-7/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
102
$0.88

Add:

Quantity Discounts
1-53$0.88
54-340$0.66
341+$0.44
AS568-364 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70364

AS568-364 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

6-3/4"ID X 7-1/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
1
$0.92

Add:

Quantity Discounts
1-50$0.92
51-326$0.69
327+$0.46
AS568-365 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70365

AS568-365 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

7"ID X 7-3/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
13
$0.92

Add:

Quantity Discounts
1-50$0.92
51-326$0.69
327+$0.46
AS568-366 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70366

AS568-366 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

7-1/4"ID X 7-5/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
70
$0.93

Add:

Quantity Discounts
1-50$0.93
51-322$0.70
323+$0.47
AS568-367 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70367

AS568-367 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

7-1/2"ID X 7-7/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
0
$0.94

Add:

Quantity Discounts
1-49$0.94
50-319$0.71
320+$0.47
AS568-368 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring B70368

AS568-368 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring

7-3/4"ID X 8-1/8"OD X 3/16"CS Buna-N O-Rings 70 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
101
$0.96

Add:

Quantity Discounts
1-48$0.96
49-312$0.72
313+$0.48