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The Category of Sealing Material and Application July 24,2018.

The basic requirement for sealing material is good sealing performance. According to different sealing media and operation conditions, sealing material need to has relative adaptation. Normally it shall meet below requirements:

1. Good sealing, not easy to leak

2. Suitable mechanical strength and hardness

3. Good compressibility and resilience, low permanent deformation

4. Not soften or decompose under high temperature, and not harden and crack under low temperature.

5. Resistance to corrosion, the material shall be able to work for a long time in acid, alkali, and oil medium. Little change in volume and hardness, and not stick to metal surface.

6. Low friction coefficient, nice abrasive resistance..

7. Has flexibility performance which can well attach with sealing surface.

8. Excellent aging resistance, durable.

9. Convenient processing and production, low cost, easy to purchase.


Rubber is the most common sealing material. Rubber Sealing Products are widely used in the fields of national defense, chemical, coal, petrochemical and metallurgic Industries, also transportation and machine-building industry. Rubber Sealing Parts has become basic parts or accessories. 

NRR Rubber Sealing Products

The most common rubber material for sealing: 

1. NBR (Nitrile Rubber)

Has excellent resistance to fuel oil and aromatic solvent, but not resistant to ketone, ester, chlorine hydride, so oil-resistant sealing rubber products normally choose NBR(Nitrile Rubber).


2. CR (Neoprene)

Has good performance in oil and solvent resistance. It work nice to resist gear oil and transformer oil, but not resist aromatic oil. CR also own nice function in weather aging and ozone aging resistance. The cross-link brittle temperature is above 200. CR rubber is usually choose to use for door and window rubber seal strips. CR has nice corrosion resistance to inorganic acid, also has nice flexibility and impermeability, which can be made as mebrane and vacuum sealing products.

 

3. NR (Nature Rubber)

Compare to most of synthetic rubber, Nature Rubber has nice integrated mechanical performance, low temperature resistance, higher resilience, and abrasive resistance. Nature Rubber does not resistant to mineral oil, but plays stable in vegetable oil and alcohol. The rubber seals and rubber gaskets working for sealing function in the brake hydraulics system with brake fluid mixing from n-butyl alcohol and refined castor oil are all use Nature Rubber. Normal sealing rubber is also usually made of nature rubber.


Goodyou Elastomer is a professional rubber products manufacturer. We work closely with customers to fully understand the challenge they faced, and develop idea products they want with nice quality and reasonable price. We have experienced technical engineers. We provide OEM service. Welcome to contact with us if you have any rubber products demand.

Oil Resistance Rubber Seal O-ring


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