materials

The choice of seal materials depends on the type and condition of the working medium (liquid, gas, steam, temperature, pressure, oxidizing ability, etc.), the features of the use of seals (reciprocating or rotational movement, movement speed), design features of the seal (radial contact or end), etc.

The material must provide the necessary tightness of the connection and the specified durability of the seal.

Materials of mechanical seal parts

Description	Material	Material (detailed description)	Material Specifications and Applications
Friction pairs	Carbon	carbon graphite	Low cost, good lubricating properties. Resistant to: corrosion, heat. Applicable for water and oil media, working temperature: +200℃... +350℃
	Ceramic	Ceramic, Aluminum oxide	Resistant to: abrasion, wear. Applicable to contaminated water and lubricant
	SIC	Silicon carbide	Resistant to: heat, abrasion, corrosion. Applicable to industrial, submersible, drainage pumps, etc.
	TC	Wolfram carbide	Resistant to: abrasion, corrosion, heat. Applicable to industrial, submersible, drainage pumps, etc.
Bellows	NBR	Acrylic Nitrile Butadiene Rubber	Resistant to: lubricants, liquid fuels: gasoline, diesel fuel and fuel oil. Applicable for water and lubricant. TEMPERATURE RANGE : -30 °C to +40 °C, short-term up to +60 °C
	EPDM	Ethylene propylene rubber	Resistant to: heat, freezing, chemicals. TEMPERATURE RANGE : -50°C to +120°C
	viton	Fluoroelastomer	Resistant to: heat, lubricants, chemicals, beer, milk, acetone. It is used for hydraulic equipment operating at elevated temperatures. TEMPERATURE RANGE : -20°C to +120°C, short-term up to +150°C
Compression springs	SS304	Steel Grade SUS 304	Steel corrosion-resistant ordinary X5CrNI18-10.
	SS316	Steel Grade SUS 316	Stainless steel. Steel increased corrosion-resistant ordinary X5CrNiMo17-12-2.