materials

The selection of seal's materials depends on the type and working medium (liquid, gas, vapour, temperature, pressure, oxidizing ability, etc.), features of the use of seals (out – in or circular motion, traveling speed), features of the design of the seal (radial – contact or mechanical) and etc.

The material should provide the necessary tightness of the wiring and the defined endurance of the seal.

The material of assembly parts of mechanical seals


Description
Material Material
(Detailed Description)
Material Feature & Suitable Scope

Friction couples
Carbon Hot Pressing Carbon Low cost, high lubricative, working temperature: +200℃... +350℃
Ceramic

Aluminium Oxid Ceramic

Resistant to: shore hardness, abrasion. Suitable for dusted water & oil
SIC Silicon Carbide Resistant to: heat, abrasion, corrosion. Suitable for industrial pump, submersible pump, sewage pumps etc.
TC Tungsten Carbide Resistant to: hardness, corrosion, heat. Suitable for industrial pump, submersible pump, sewage pumps etc.


Silphones

NBR Buna-N (nitrile) Resistant to: oil, pressure, abrasion. High elasticity and mechanical strength. Suitable for water & oil at -20+-100℃
EPDM Ethylene Propylene Rubber Resistant to: heat, freeze, chemical reagents depending. Suitable for water at -40℃+150℃
Viton Fluorocarbon Resistant to: heat, oil, reagents, medicine, acetone. Suitable for high temperature hydraulic equipment and vacuum equipment suitable for corrosive medium at -20℃+200℃


Pressure springs 
SS304 STAINLESS STEE Resistant to: abrasion, corrosion
SS316 STAINLESS STEE Resistant to: abrasion, corrosion