NBR O Ring Black

Product Details

O-ring specifications and standards

O-ring specifications and models mainly include UHSO-ring specifications, UHPO-ring specifications, UNO-ring specifications, DHO-ring specifications, piston rod O-ring specifications, high temperature O-rings, high-pressure O-rings, corrosion-resistant O-rings Rings, wear resistant O-rings.

The standard of O-ring mainly includes national standard GB 1235-76, national standard GB3452.1-92; Japanese standard P TYPE, G TYPE, S TYPE, SS/V TYPE, F TYPE; American standard AS568, British standard series; European standard series

O-ring technical requirements include appearance requirements, size requirements and material physical performance requirements.

Appearance requirements conform to GB/T3452.2-2007

Material requirements comply with HG/T2579-2008

The size requirements conform to GB/T3452.1-2005

Nitrile Rubber (NBR)

Nitrile Rubber is made from the copolymerization of acrylonitrile and butadiene. The content of acrylonitrile is 18%~50%. The higher the content of acrylonitrile, the better the resistance to petrochemical hydrocarbon fuel oil. The low temperature performance becomes worse, and the general operating temperature range is -25~100 ℃. Nitrile rubber is one of the most commonly used rubbers for oil seals and O-rings.

Advantage:

● Good oil resistance, water resistance, solvent resistance and high pressure oil resistance.

● Good compression, anti-wear and elongation force.

Shortcoming:

● Not suitable for use in polar solvents such as ketones, ozone, nitro hydrocarbons, MEK and chloroform.

Scope of application: used to make fuel tanks, lubricating oil tanks and rubber parts used in petroleum hydraulic oil, gasoline, water, silicone grease, silicone oil, diester lubricating oil, glycol hydraulic oil and other fluid media, especially Seal parts. It can be said to be the most widely used and lowest cost rubber seals.

Requirements for installing O-rings

Before installing the O-ring (O-ring rubber seal), check the following:

1. Whether the introduction angle is processed according to the drawing and whether the sharp edge is chamfered or rounded;

2. Whether the inner diameter is deburred and whether the surface is polluted;

3. Whether the seals and parts have been coated with grease or lubricating liquid (to ensure the medium compatibility of the elastomer, it is recommended to use the sealed liquid to lubricate);

4. Do not use grease with solid additives, such as molybdenum disulfide, zinc sulfide.

We are a professional manufacturer of rubber seals. For more information on o-ring seals and other seals, please call or contact us immediately.

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