High Quality Various Sizes NBR O Ring Seal

Buna/NBR/Nitrile Rubber O-ring with Black Color.Hardness 60/70/90 Shore A.Standard size or Custom Size.Working Temperature -25℃~+120℃.

Product Details

High Quality Various Sizes NBR O Ring seal

1.The O-ring is an annular seal having an O-shaped cross section, the size of which is determined by the inner diameter ID and the wire diameter CS.

2.O-ring size calculation: outer diameter = inner diameter + 2 x wire diameter (OD = ID + 2x CS).
3.The purpose of using O-ring seals is to prevent leakage and loss of liquids or gases.
4.O-rings are the most commonly used type of seal because of their simplicity, convenience, and small installation space. As long as the groove design and material selection are correct, and the operating conditions are within the temperature range of the rubber material, the seal can have a long-term sealing effect in the static or dynamic seal.


Sealing force changes with system pressure

Product Name
High Quality Various Sizes NBR O Ring seal 
Working Temperature-25℃~+120℃
ColorBlack, grey,purple or as customer need etc.
Hardness60/70/90 Shore A

Details Images of NBR O Ring seal

nbr60 oring

NBR70 oring

buna oring

Our Advantage

750宽 meitu_29

Many specification for you choose

AS 568, BS 4518, GB/T 3452.1, JIS B2401 P/G/S/V, SMS 1586, METRIC and JASO F404 standard sizes and various non-standard sizes.

Minimum production size 0.5mm (inside diameter) × 0.5mm (wire diameter)

Maximum production size 1400mm (inside diameter) × 50mm (wire diameter)

①There are more than 80 QC staff to control the quality.
②Every product will be 100% checked before shipping,we won’t let anything defective go.

Product Packing


Opp bag inside

Anti Vibration Mounts01

Carton outside

All packaging are signed our logo. And any customized request is ok.

Quickly delivery, with several delivery ways, such as DHL/FEDEX/UPS/TNT express, Air and Ocean shipping way. We have several express accounts and the cost is very cheap.

O ring Feature

  1. Suitable for a wide range of pressure, temperature and clearance applications;

  2. Good sealing and long life;

  3. The sealing part has a simple structure, is easy to maintain, and is not easily damaged;

  4. Small size, light weight, low cost;

  5. The single ring can seal the two directions, and the dynamic friction resistance is small;

  6. Both static and dynamic seals can be used.

    A static seal is a seal in which two adjacent surfaces have no relative motion.

    Dynamic seal means that there is reciprocation between the parts being sealed.


SVKS Seal, with over 10 years experience, is one of the leading high quality various sizes nbr o ring seal manufacturers and suppliers in China. And we also offer the customized service catering to your special requirement. Please be free to buy the rubber products with competitive price from us.
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