Xiamen Better Silicone Rubber Co.,Ltd
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EPDM
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Rubber grommet production

Rubber categories:
(1) General Rubber: NR/BR/SBR/EPDM  
(2) Special Rubber: SR/FPM/CIIR/HNBR/CSM
Different rubber materials possess differents properties. Choose a correct material is important when you decide to produce a product. We will discuss some differences between these materials so that you can choose the right one.

 
NBR
NBR is a unsaturated rubber copolymer with polar unsaturated carbon chains, which is copolymerized by propenenitrile and butadiene, according to propenenitrile content from low to high, the higher the resistance to oils but the lower the resistance to cold.
Oil resistance is the greatest advantage of NBR elastomer so it has excellent resistance to petroleum base oils and non-polar solvents but poor resistance to polar oils and polar solvents.

Neoprene

Neoprene rubber features Good Physical Properties, Oil resistance, heat & flame resistance, sunlight resistance, ozone resistance, acid and alkali resistance and chemical resistance.
The cold tolerance and storage stability are not very well.
Tensile strength, elongation, reversible crystalline and adhesion are good.
Aging resistance, heat & oil resistance and chemical resistance are excellent.

 
O Ring
(Main Materials)
Working Temperature Properties & Applications
 
NBR O Ring
 
-40~120℃
Good resistance to mineral oil and wearing;
Widely used in oil seals;
Can’t be used in polar solvents(e.g. ketones & esters solvents)
 
SI O Ring
 
-60~250℃
Good resistance to heat & cold;
Inferior to other rubbers in resistance to weather, alkaline and water. 
 
FKM O Ring
 
-40~240℃
Excellent heat resistance 
Good oil & chemicals resistance
 
EPDM O Ring
 
-40~150℃
Excellent resistance to polar solvents and weather;
Poor oil resistance
 
 
PTFE O Ring
 
 
-100~280℃
Good resistance to heat, cold, chemicals and weather;
One of main materials used in Low coefficient of friction oil seals;
Poor elasticity

Contacts

Office Address: 7F7B09, Harmony Square, No.2 Huli Avenue, Huli District, Xiamen , China.
  Factory Address: 165th, Tong'An Park, Industrial Zone, Tong'An District, Xiamen City, China
  Post Code: 361000
Tel: 86 592-5616001
E-mail: 
admin@better-silicone.com

Contact Us

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