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O-Rings

4.0mm CS

Buna-N / Nitrile Metric O-Rings 70 Duro (NBR):

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.

O-Ring Dimensions are defined by the cross section (CS) and the inside diameter (ID).

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
4mm x 173mm (NBR) Buna-N 70 Duro Metric O-Rings (JIS V175) N4.00X173

4mm x 173mm (NBR) Buna-N 70 Duro Metric O-Rings (JIS V175)

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
0
$1.91

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Quantity Discounts
1-9$1.91
10-99$1.433
100+$0.955
4mm x 174mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X174

4mm x 174mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
0
$3.26

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Quantity Discounts
1-4$3.26
5-49$2.445
50+$1.63
4mm x 177mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X177

4mm x 177mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
0
$3.29

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Quantity Discounts
1-4$3.29
5-49$2.468
50+$1.645
4mm x 180mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X180

4mm x 180mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
0
$3.34

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Quantity Discounts
1-4$3.34
5-49$2.505
50+$1.67
4mm x 196mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X196

4mm x 196mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
5
$3.54

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Quantity Discounts
1-4$3.54
5-49$2.655
50+$1.77
4mm x 200mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X200

4mm x 200mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
0
$3.54

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Quantity Discounts
1-4$3.54
5-49$2.655
50+$1.77
4mm x 204mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X204

4mm x 204mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
13
$3.60

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Quantity Discounts
1-4$3.60
5-49$2.70
50+$1.80
4mm CS X 204mm ID (NBR) Buna-N 70 Duro Metric O-Ring N4.00X205

4mm CS X 204mm ID (NBR) Buna-N 70 Duro Metric O-Ring

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
0
$2.24

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Quantity Discounts
1-9$2.24
10-99$1.68
100+$1.12
4mm x 207mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X207

4mm x 207mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
398
$3.60

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Quantity Discounts
1-4$3.60
5-49$2.70
50+$1.80
4mm x 208mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X208

4mm x 208mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
1
$3.60

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Quantity Discounts
1-4$3.60
5-49$2.70
50+$1.80
4mm x 210mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X210

4mm x 210mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
279
$3.60

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Quantity Discounts
1-4$3.60
5-49$2.70
50+$1.80
4mm x 214mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X214

4mm x 214mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
0
$3.60

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Quantity Discounts
1-4$3.60
5-49$2.70
50+$1.80
4mm x 216mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X216

4mm x 216mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
7
$3.71

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Quantity Discounts
1-4$3.71
5-49$2.783
50+$1.855
4mm x 220mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X220

4mm x 220mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
2
$3.67

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Quantity Discounts
1-4$3.67
5-49$2.753
50+$1.835
4mm x 225mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X225

4mm x 225mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
0
$3.72

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Quantity Discounts
1-4$3.72
5-49$2.79
50+$1.86
4mm x 232mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X232

4mm x 232mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
0
$3.87

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Quantity Discounts
1-4$3.87
5-49$2.903
50+$1.935
4mm x 240mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X240

4mm x 240mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
0
$4.04

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Quantity Discounts
1-4$4.04
5-49$3.03
50+$2.02
4mm x 242mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X242

4mm x 242mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
0
$4.28

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Quantity Discounts
1-4$4.28
5-49$3.21
50+$2.14
4mm x 245mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X245

4mm x 245mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
0
$4.52

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Quantity Discounts
1-4$4.52
5-49$3.39
50+$2.26
4mm x 247mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X247

4mm x 247mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
14
$4.58

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Quantity Discounts
1-4$4.58
5-49$3.435
50+$2.29
4mm x 250mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X250

4mm x 250mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
48
$4.64

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Quantity Discounts
1-4$4.64
5-49$3.48
50+$2.32
4mm x 252mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X252

4mm x 252mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
-1
$4.95

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Quantity Discounts
1-4$4.95
5-49$3.713
50+$2.475
4mm x 254mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X254

4mm x 254mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
0
$5.26

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Quantity Discounts
1-4$5.26
5-49$3.945
50+$2.63
4mm x 255mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X255

4mm x 255mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
3
$5.57

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Quantity Discounts
1-4$5.57
5-49$4.178
50+$2.785
4mm x 260mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X260

4mm x 260mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
0
$5.88

Add:

Quantity Discounts
1-4$5.88
5-49$4.41
50+$2.94