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7.0mm 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 Stock Price Quantity Discounts
7mm X 33mm Buna-N 70 Metric O-rings N7.00X033

7mm X 33mm Buna-N 70 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
$1.42

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Quantity Discounts
1-23$1.42
24-142$1.07
143+$0.71
7mm X 54mm Buna-N 70 Metric O-rings N7.00X054

7mm X 54mm Buna-N 70 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
$4.93

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Quantity Discounts
1-6$4.93
7-40$3.70
41+$2.47
7mm X 57mm Buna-N 70 Metric O-rings N7.00X057

7mm X 57mm Buna-N 70 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
$4.11

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Quantity Discounts
1-8$4.11
9-48$3.08
49+$2.06
7mm X 60mm Buna-N 70 Metric O-rings N7.00X060

7mm X 60mm Buna-N 70 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...
482
$1.06

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Quantity Discounts
1-31$1.06
32-188$0.80
189+$0.53
7mm X 70mm Buna-N 70 Metric O-rings N7.00X070

7mm X 70mm Buna-N 70 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...
9
$2.50

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Quantity Discounts
1-13$2.50
14-79$1.88
80+$1.25
7mm X 79mm Buna-N 70 Metric O-rings N7.00X079

7mm X 79mm Buna-N 70 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...
6
$2.56

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Quantity Discounts
1-13$2.56
14-78$1.92
79+$1.28
7mm X 85mm Buna-N 70 Metric O-rings N7.00X085

7mm X 85mm Buna-N 70 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
$5.34

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Min:  47
Quantity Discounts
47-249$5.34
250-936$4.01
937+$2.67
7mm X 90mm Buna-N 70 Metric O-rings N7.00X090

7mm X 90mm Buna-N 70 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
$2.84

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Min:  89
Quantity Discounts
89-469$2.84
470-1,760$2.13
1,761+$1.42
7mm X 92mm Buna-N 70 Metric O-rings N7.00X092

7mm X 92mm Buna-N 70 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...
10
$4.76

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Quantity Discounts
1-7$4.76
8-42$3.57
43+$2.38
7mm X 105mm Buna-N 70 Metric O-rings N7.00X105

7mm X 105mm Buna-N 70 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
$7.97

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Quantity Discounts
1-4$7.97
5-25$5.98
26+$3.99
7mm X 110mm Buna-N 70 Metric O-rings N7.00X110

7mm X 110mm Buna-N 70 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
$4.40

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Quantity Discounts
1-7$4.40
8-45$3.30
46+$2.20
7mm X 160mm Buna-N 70 Metric O-rings N7.00X160

7mm X 160mm Buna-N 70 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
$10.92

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Quantity Discounts
1-3$10.92
4-18$8.19
19+$5.46
7mm X 168mm Buna-N 70 Metric O-rings N7.00X168

7mm X 168mm Buna-N 70 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
$14.84

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Quantity Discounts
1-2$14.84
3-13$11.13
14+$7.42
7mm X 224mm Buna-N 70 Metric O-rings N7.00X224

7mm X 224mm Buna-N 70 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
$11.36

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Quantity Discounts
1-2$11.36
3-17$8.52
18+$5.68
7mm X 270mm Buna-N 70 Metric O-rings N7.00X270

7mm X 270mm Buna-N 70 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
$22.68

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Quantity Discounts
1$22.68
2-11$17.01
12+$11.34
7mm X 320mm Buna-N 70 Metric O-rings N7.00X320

7mm X 320mm Buna-N 70 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
$26.60

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Quantity Discounts
1$26.60
2-11$19.95
12+$13.30
7mm X 325mm Buna-N 70 Metric O-rings N7.00X325

7mm X 325mm Buna-N 70 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
$30.52

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Quantity Discounts
1$30.52
2-11$22.89
12+$15.26
7mm X 375mm Buna-N 70 Metric O-rings N7.00X375

7mm X 375mm Buna-N 70 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
$43.10

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Quantity Discounts
1$43.10
2-11$32.33
12+$21.55
7mm X 437mm Buna-N 70 Metric O-rings N7.00X437

7mm X 437mm Buna-N 70 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
$55.69

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Quantity Discounts
1$55.69
2-11$41.77
12+$27.85
7mm X 462mm Buna-N 70 Metric O-rings N7.00X462

7mm X 462mm Buna-N 70 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
$67.58

Add:

Quantity Discounts
1$67.58
2-11$50.69
12+$33.79


What are the most common O-ring compounds?

We stock O-Rings in over 20 different compounds and durometers the following six are the standard rubber materials in a range of durometers (Shore A) hardness to satisfy practically any service condition:

Buna-N O-Rings / Nitrile O-Rings / NBR: Nitrile (Buna-N) is the most widely used elastomer due to its excellent resistance to petroleum products, operating temperature range (-40°F to +257°F) and one of the best performance-to-cost values. It's an ideal material for aerospace, automotive, propane and natural gas applications. Special Hydrogenated Nitrile (HNBR) compounds can improve resistance to direct ozone, sunlight, and weather exposure while increasing temperature range to +300°F.
AS-568 Buna-N O-Rings | Metric Buna-N O-Rings

Viton® O-Rings / FKM: Fluorocarbon (Viton®) exhibits exceptional resistance to chemicals, oils, temperature extremes (-13°F to +446°F), low compression set, low gas permeability and excellent aging characteristics. Applications include: aircraft engines, automotive fuel handling systems, and chemical processing industries. FKM is also suitable for high vacuum applications. It is not recommended for exposure to ketones, alkalis, and Skydrol® fluids. Custom compounds are available with improved chemical and low temperature resistance.
AS-568 Viton® O-Rings | Metric Viton® O-Rings

Ethylene-Propylene / EPDM O-Rings: EPDM has outstanding resistance to heat, water and steam, alkali, mild acidic and oxygenated solvents, ozone, and sunlight (-40ºF to +275ºF); but it is not recommended for gasoline, petroleum oil and grease, and hydrocarbon environments. This popular rubber compound is usually the first choice for low torque drive belt applications.
AS-568 EPDM O-Rings | Metric EPDM O-Rings

Silicone O-Rings / VMQ: In the Silicone family, you will find compounds which are superior as static seals in extreme temperature conditions. Standard compounds handle operating temperatures -85º to +400ºF. Silicone compounds are popular in food and medical applications because they are very clean and do not impart odor or taste. Special Phenyl silicones can be used down to -148°F.
AS-568 Silicone O-Rings | Metric Silicone O-Rings

Neoprene® O-Rings / CR: Neoprene (-40º to +250ºF) is reasonably priced and features good resistance to petroleum oils, ozone, sunlight and oxygen aging, relatively low compression set, good resilience and outstanding physical toughness. It is the preferred sealing material for the refrigeration industry because of its resistance to ammonia and Freon®.
AS-568 Neoprene® O-Rings