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-200 Series - 0.139 - 1/8" CS

50 Durometer, Commercial Grade Soft Buna-N

Designed for applications requiring soft O-ring sealing material. Primarily used as a low pressure static seal or gasket. B50 O-rings not in stock may take up to 7 weeks to ship. 6" ID & larger Vulcanized O-Rings available to reduce delivery times and minimum orders. Link to order B50 Vulcanized O-Rings.

Size not listed, special requirements or large quantities please click this link to Request a Price Quote.

 




Image Model+ Item Name Qty. Price Quantity Discounts
-241 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50241

-241 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

3-7/8"ID X 4-1/8"OD X 1/8"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
3
$1.76

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Quantity Discounts
1-22$1.76
23-135$1.32
136+$0.88
-242 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50242

-242 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

4"ID X 4-1/4"OD X 1/8"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
7
$1.77

Add:

Quantity Discounts
1-22$1.77
23-133$1.33
134+$0.89
-243 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50243

-243 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

4-1/8"ID X 4-3/8"OD X 1/8"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
74
$1.79

Add:

Quantity Discounts
1-21$1.79
22-131$1.34
132+$0.90
-244 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50244

-244 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

4-1/4"ID X 4-1/2"OD X 1/8"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
0
$1.84

Add:
Min:  136
Quantity Discounts
136-362$1.84
363-2,717$1.38
2,718+$0.92
-245 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50245

-245 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

4-3/8"ID X 4-5/8"OD X 1/8"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
0
$1.87

Add:
Min:  134
Quantity Discounts
134-354$1.87
355-2,659$1.40
2,660+$0.94
-246 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50246

-246 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...
70
$1.90

Add:

Quantity Discounts
1-18$1.90
19-109$1.43
110+$0.95
-247 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50247

-247 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

4-5/8"ID X 4-7/8"OD X 1/8"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
6
$1.92

Add:

Quantity Discounts
1-17$1.92
18-107$1.44
108+$0.96
-248 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50248

-248 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

4-3/4"ID X 5"OD X 1/8"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
0
$8.09

Add:
Min:  129
Quantity Discounts
129-342$8.09
343-2,577$6.07
2,578+$4.05
-249 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50249

-249 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

4-7/8"ID X 5-1/8"OD X 1/8"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...
510
$1.95

Add:

Quantity Discounts
1-17$1.95
18-102$1.46
103+$0.98
-250 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50250

-250 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

5"ID X 5-1/4"OD X 1/8"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known as...
853
$2.02

Add:

Quantity Discounts
1-16$2.02
17-101$1.52
102+$1.01
-251 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50251

-251 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...
0
$2.77

Add:
Min:  91
Quantity Discounts
91-240$2.77
241-1,798$2.08
1,799+$1.39
-252 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50252

-252 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...
77
$2.78

Add:

Quantity Discounts
1-13$2.78
14-83$2.09
84+$1.39
-253 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50253

-253 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...
144
$2.79

Add:

Quantity Discounts
1-13$2.79
14-78$2.09
79+$1.40
-254 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50254

-254 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...
863
$2.81

Add:

Quantity Discounts
1-11$2.81
12-70$2.11
71+$1.41
-255 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50255

-255 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...
193
$2.83

Add:

Quantity Discounts
1-12$2.83
13-72$2.12
73+$1.42
-256 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50256

-256 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...
260
$2.84

Add:

Quantity Discounts
1-11$2.84
12-69$2.13
70+$1.42
-257 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50257

-257 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...
0
$2.92

Add:
Min:  86
Quantity Discounts
86-228$2.92
229-1,712$2.19
1,713+$1.46
-258 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50258

-258 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
$2.94

Add:

Quantity Discounts
1-9$2.94
10-56$2.21
57+$1.47
-259 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50259

-259 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...
126
$3.06

Add:

Quantity Discounts
1-9$3.06
10-54$2.30
55+$1.53
-260 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring B50260

-260 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...
0
$3.37

Add:
Min:  75
Quantity Discounts
75-197$3.37
198-1,479$2.53
1,480+$1.69