O-Rings $1.00 Minimum + Shipping from $7.99

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-300 Series - 0.210 - 3/16" 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.




Image Model+ Item Name Qty. Price Quantity Discounts
AS568-309 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50309

AS568-309 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

7/16"ID X 13/16"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
0
$0.29

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Min Qty:  1,207
Quantity Discounts
1207-999$0.29
1,000-9,999$0.289
10,000+$0.29
AS568-310 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50310

AS568-310 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

1/2"ID X 7/8"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
5,992
$0.57

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Min Qty:  2
Quantity Discounts
2-999$0.57
1,000-9,999$0.568
10,000+$0.568
AS568-311 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50311

AS568-311 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

9/16"ID X 15/16"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
117,246
$0.85

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Min Qty:  2
Quantity Discounts
2-999$0.85
1,000-9,999$0.64
10,000+$0.43
AS568-312 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50312

AS568-312 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

5/8"ID X 1"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
86
$1.13

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Quantity Discounts
1-999$1.13
1,000-9,999$0.85
10,000+$0.57
AS568-313 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50313

AS568-313 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

11/16"ID X 1-1/16"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
282
$1.42

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Quantity Discounts
1-999$1.42
1,000-9,999$1.405
10,000+$1.41
AS568-314 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50314

AS568-314 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

3/4"ID X 1-1/8"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
4,677
$1.70

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Quantity Discounts
1-999$1.70
1,000-9,999$1.678
10,000+$1.686
AS568-315 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50315

AS568-315 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

13/16"ID X 1-3/16"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
0
$1.98

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Min Qty:  177
Quantity Discounts
177-999$1.98
1,000-9,999$1.95
10,000+$1.96
AS568-316 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50316

AS568-316 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

7/8"ID X 1-1/4"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
0
$2.26

Add:
Min Qty:  155
Quantity Discounts
155-999$2.26
1,000-9,999$1.70
10,000+$1.13
AS568-317 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50317

AS568-317 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

15/16"ID X 1-5/16"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
0
$2.54

Add:
Min Qty:  138
Quantity Discounts
138-999$2.54
1,000-9,999$2.491
10,000+$2.508
AS568-318 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50318

AS568-318 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

1"ID X 1-3/8"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
0
$2.82

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Min Qty:  125
Quantity Discounts
125-999$2.82
1,000-9,999$2.12
10,000+$1.41
AS568-319 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50319

AS568-319 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

1-1/16"ID X 1-7/16"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
1,991
$3.10

Add:

Quantity Discounts
1-999$3.10
1,000-9,999$3.028
10,000+$3.052
AS568-320 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50320

AS568-320 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

1-1/8"ID X 1-1/2"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
109
$3.38

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Quantity Discounts
1-999$3.38
1,000-9,999$3.294
10,000+$3.323
AS568-321 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50321

AS568-321 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as Buna-N or NBR, is a copolymer of...
964
$3.67

Add:

Quantity Discounts
1-999$3.67
1,000-9,999$3.569
10,000+$3.602
AS568-322 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50322

AS568-322 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

1-1/4"ID X 1-5/8"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
209
$3.95

Add:

Quantity Discounts
1-999$3.95
1,000-9,999$2.97
10,000+$1.98
AS568-323 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50323

AS568-323 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

1-5/16"ID X 1-11/16"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also...
1,300
$4.23

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Quantity Discounts
1-999$4.23
1,000-9,999$3.18
10,000+$2.12
AS568-324 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50324

AS568-324 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

1-3/8"ID X 1-3/4"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
2,306
$4.51

Add:

Quantity Discounts
1-999$4.51
1,000-9,999$3.39
10,000+$2.26
AS568-325 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50325

AS568-325 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

1-1/2"ID X 1-7/8"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
5,347
$4.79

Add:

Quantity Discounts
1-999$4.79
1,000-9,999$3.60
10,000+$2.40
AS568-326 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50326

AS568-326 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

1-5/8"ID X 2"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
50
$5.07

Add:

Quantity Discounts
1-999$5.07
1,000-9,999$3.81
10,000+$2.54
AS568-327 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50327

AS568-327 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

1-3/4"ID X 2-1/8"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
2,631
$5.35

Add:

Quantity Discounts
1-999$5.35
1,000-9,999$4.02
10,000+$2.68
AS568-328 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50328

AS568-328 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

1-7/8"ID X 2-1/4"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
27
$5.63

Add:

Quantity Discounts
1-999$5.63
1,000-9,999$4.23
10,000+$2.82
AS568-329 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50329

AS568-329 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

2"ID X 2-3/8"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
2,416
$5.91

Add:

Quantity Discounts
1-999$5.91
1,000-9,999$5.648
10,000+$5.735
AS568-330 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50330

AS568-330 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

2-1/8"ID X 2-1/2"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
3,740
$6.20

Add:

Quantity Discounts
1-999$6.20
1,000-9,999$4.65
10,000+$3.10
AS568-331 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50331

AS568-331 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as Buna-N or NBR, is a copolymer of...
1,772
$6.48

Add:

Quantity Discounts
1-999$6.48
1,000-9,999$4.86
10,000+$3.24
AS568-332 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50332

AS568-332 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

2-3/8"ID X 2-3/4"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
9
$6.76

Add:

Quantity Discounts
1-999$6.76
1,000-9,999$5.07
10,000+$3.38
AS568-333 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50333

AS568-333 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

2-1/2"ID X 2-7/8"OD X 3/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
1,142
$7.04

Add:

Quantity Discounts
1-999$7.04
1,000-9,999$5.28
10,000+$3.52