70/90 A Buna-N/NBR/Nitrile Rubber O Ring

FOB Reference Price:Get Latest Price
US $0.01-1 / Piece | 1000 Piece/Pieces sample is ok (Min. Order)
Supply Ability:
1000000 Piece/Pieces per Week quick supply
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Quick Details
Standard or Nonstandard:
O Ring
NBR, Buna-N/NBR/Nitrile
Place of Origin:
Zhejiang, China (Mainland)
Brand Name:
Qianlang NBR O Ring
Model Number:
NBR O-ring
DURO 50~90 Shore A
Mechanical Seal
Packaging & Delivery
Packaging Details
1)packing small lots in plastic bags
2)put into carton or wooden box
Delivery Time
according to your order
Product Description

NBR O Rings have excellent resistance to gasoline and fat hydrocarbon oil, and NBR O Rings have good heat resistance, good air tightness, abrasion resistance and water resistance, strong cohesive force.

Nitrile Physical PropertiesExcellentGoodFairPoor
Abrasion Resistance
Acid Resistance
Chemical Resistance
Cold Resistance
Compression Set Resistance
Dynamic Properties
Electrical Properties
Flame Resistance
Heat Resistance
Oil Resistance
Ozone Resistance
Tear Resistance
Tensile Strength
Water Steam Resistance
Weather Resistance
NBR O-rings size: AS568, ISO3601
NBR O Rings hardness: DURO 50~90 A, general 70/90 A

NBR O-rings color: general Black

NBR O-rings service temperature: -30°C~+120°C

Packaging & Shipping


1) Pack NBR O-rings into plastic bags with label

2) Put the bags in the strong carton

3) Load all cartons onto the pallet if needed




We can send the small order via air and large quantity via ocean.

And we have a good discount price from FedEx, UPS, DHL and other logistics company.

Company Information

HAINING QIANLANG RUBBER PRODUCTS FACTORY is specialized in the manufacturing rubber products for more than 20 years.
Our main Products contain o-rings, washers, grommets, bushings, mounts, bellows, plugs, bumpers, suction cups, silicone wristbands, gaskets, hoses, extrusions, rubber valve seat and other kinds of rubber parts, wide varieties, complete in specifications. Customization is our advantage. We can design and manufacture the products meet customer satisfaction according to customer's drawings, samples and ideas. And we make the moulds by ourselves, so we can provide you with competitive prices and products.


Q: Are you manufactory?

A: Yes, we are manufactory, not a trade company, we have own technicist and workshop, design, make moulds and produce, so the product manufacturer provides straightly, you will get the best price.


Q: Can you make all kinds of rubber products?

A: Sorry, we are not perfect, but make-to-order is our important service and we are very experienced, if you tell us the necessary information (size, drawing, material etc.), we will make out the satisfied products for you.


Q: What’s your material?

A: Our materials contain Silicone, FKM, Viton®, NBR, EPDM, NR, PU, HNBR, SBR, BR, CR, SEP, Butyl, EPM, Fluorosilicone, FFKM, Aflas and ACM etc. If the material is special rubber, such as NBR and PVC mixed, that’s also OK. If you don’t know the material, please tell us the work environment and requirement of your products, we will suggest the best material.


Q: Which 3D drawing file can you open?

A: We can open 3D file including Solidworks, DXF, DWG, Lip Feat Part, Parasolid, IGES, STEP, ACIS, VDAFS, VRML, STL, CATIA Graphics, ProE Part, ProE Assembly, Unigraphics, Inventor Part, Inventor Assembly, Solid Edge Part, Solid Edge Assembly, CADKEY, ADD-Ins, IDF, Rhino etc.


Q: Why is your mould cost so cheap?

A: Because we make the moulds by ourselves, no other hidden cost.


Q: Do you accept a small order?

A: Yes, that’s OK, and you can pay by PayPal, that’s convenient for you

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