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| 1. LIP MATERIAL : |
The enviroment in which a seal will operate should be determined before selecting the sealing or lip matrial. It must consider about the functin of the seal as follows:
* Ratings :
1. very good
2. good for most application
3. fair, can be used if other materials available but otherwise not recommended
4. not recommended
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CODE |
NR |
SBR |
EPDM |
CR |
NBR |
ACM(PA) |
SI |
FPM |
| Properties\Compound |
Natural Rubber |
Styrene Butadiene Copolymer |
Ethylene Propylene Rubber |
Poly-chloroprene |
Nitrile Rubber |
Poly-acrylate |
Silicone Rubber |
Fluoro Rubber (Viton) |
| Tensile |
1 |
2 |
3 |
1 |
1 |
4 |
4 |
1 |
| Durometer |
30-100 |
40-100 |
30-80 |
40-90 |
30-100 |
40-90 |
30-90 |
55-90 |
| Rebound |
1 |
3 |
2 |
1 |
2 |
3 |
3 |
3 |
| Abrasion Resistance |
1 |
1 |
2 |
2 |
1 |
3 |
4 |
3 |
| Impact Strength |
1 |
1 |
2 |
1 |
2 |
4 |
4 |
3 |
| Gas Impermeability |
3 |
3 |
3 |
2 |
2 |
3 |
4 |
2 |
| Oxygen Resistance |
3 |
3 |
2 |
2 |
3 |
2 |
1 |
1 |
| Ozone Resistance |
4 |
4 |
1 |
2 |
4 |
2 |
1 |
1 |
| Weathering esistance |
3 |
3 |
1 |
2 |
3 |
2 |
1 |
1 |
| Heat Resistance |
4 |
3 |
1 |
2 |
3 |
2 |
1 |
1 |
| Low Temperature |
2 |
3 |
2 |
3 |
3 |
4 |
1 |
2 |
| Water Resistance |
1 |
2 |
1 |
2 |
2 |
4 |
2 |
2 |
| Oil and Fuel Resistance |
4 |
4 |
4 |
2 |
1 |
1 |
3 |
1 |
| Animal, Vegetable Oil |
3 |
3 |
2 |
2 |
1 |
1 |
2 |
1 |
| Alcohol Resistance |
2 |
2 |
2 |
1 |
2 |
2 |
2 |
2 |
| Alkaline Resistance |
3 |
3 |
2 |
1 |
2 |
4 |
4 |
2 |
| Acid Resistance |
2 |
2 |
1 |
1 |
1 |
3 |
3 |
1 |
| Aliphatic Solvent |
4 |
4 |
4 |
2 |
1 |
1 |
4 |
1 |
| Aromatic Solvent |
4 |
4 |
4 |
2 |
1 |
1 |
4 |
1 |
| Oxygenated Solvent |
2 |
2 |
1 |
4 |
4 |
4 |
3 |
4 |
| CODE |
NR |
SBR |
EPDM |
CR |
NBR |
ACM(PA) |
SI |
FPM |
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| * |
Other materials like: P.T.F.E (Teflon ), Butyl, Vamac, Felt, and Leather are also available for seals and other molded products. |
| * |
Please contact TCK for your specific applications and requirements. |
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| 2. METAL CASE AND SPRING : |
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| The other major components of an oil seal are the metal case and garter spring. |
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| CASE |
| SAE. NO |
AISI NO. |
APPLICATION |
COST |
| 1008~1010 |
1008~1010 |
GENERAL |
LOW |
| SAE 30304 |
304 |
SPECIAL CORROSION RESISTANCE |
HIGH |
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| The metal case generally is produced from carbon steel for general applications in oil or grease. For special applications when sealing sea water for corrosive fluids for gases, stainless steel can be applied at an increase in price. Other metal case like: Aluminum case, Brass case fare available for your specific applications and requirements. |
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| SPRING |
| SAE. NO |
AISI NO. |
APPLICATION |
COST |
| 1070~1080 |
1070~10880 |
GENERAL |
LOW |
| 30304 |
304 |
SPECIAL CORROSION RESISTANCE |
HIGH |
| C5210R |
C5210 |
CORROSION & AGING RESISTANCE |
HIGHER |
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| For the garter spring , piano wire is used for general applications. Wherre corrosion resistance or extreme heat resistance is required, stainless steel is available. |
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No.5-20, Sher-wei St., Sher-wei Village, Fuh Sing Hsiang, Changhwa, Taiwan
TEL:886-4-7762466 FAX:886-4-7762366E-mail: , |
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