Name

Code

Main characteristics

Operating Temperature(℃)

Main application

Buna-N rubber

NBR

Good oil,heat and abrasive resistance.Widely used for manufacturing sealing articles,but not applicable for phosphate series hydraulic oil and gear oil containing polar additives.

-40—120

Used for manufacturing O-ring and oil seal,applicable for seal of general hydraulic and pneumatic system.

Rubber and plastic composite material

RP

The material has a high modulus of elasticity and high strength.Other properties are the same as NBR.

-30—120

Used for manufacturing O-ring,Y-ring and dust ring,etc;applied to seal of engineering machinery and high-pressure hydraulic system.

Canvas filler rubber

FAB

Manufactured by composition of NBR and cotton cloth;high strength and good abrasive and oil resistance,slightly lower than those of NBR;other properties are the same as NBR.

-30—100

Used for manufacturing cloth clamp seal;applicable for seal of engineering machinery,metall-urgical equipment and high-pressure system.

Fluoro rubber

FKM

Heat-,acid- and alkali-and other chemicals-resisting;oil proof(including phosphate series hydraulic oil);applicable for all lubricant oil,gasoline,hydraulic oil and synthetic oil.

-20—200

Applicable for seal of heat-,chemicals and fire-resistant hydraulic oil;widely used in industries such as metallurgy and electric power.

Silicon rubber

PMQ or VMQ

Good heat resistance and cold resistance;small compression set;low mechanical strength.

-60—230

Applicable for high speed rotary sealing and seal of food machinery under high and low temperature.

Polyacrylate rubber

ACM

The heat resistance is better than that of NBR;it can work in various lubricant oil,hydraulic oil and petroleum series hydraulic oil containing polar additives;bad water resistance.

-20—150

It can be used for oil seal of various gear boxes and speed changing boxes;can resist high and medium temperature.

Ethylene propylene rubber

EPDM or EPM

Good gas resistance;general aging and oil resistance in air;can resist Freon and multiple refrigerating fluids.

-50—150

Used for refrigerators and refrigerating machinery.

Polytetrafluor oethylene

PTEE

Good chemical stability;good heat and cold resistance;resist various medium such as oil,water,steam and chemicals;high mechanical strength;good high pressure resistance and abrasive resistance;extremely low friction coefficient;good self-lubricity.

-55—+260

Used for manufacturing wear ring,ride ring and retainer ring;common sealing material in machinery;widely used in metallurgy,petrifaction,engineering machinery and light industrial machinery.

Nylon

PA

Good oil,temperature and abrasive resistance;high compression strength;good shock resistance;bad dimensional stability.

-40—120

Used for manufacturing rider ring,de-support ring,junk ring and retainer ring.

Polyformaldehyde

POM

Good oil,temperature and abrasive resistance;high compression strength;good shock resistance;good self-lubricity;good dimensional stability;bad flexibility.

-40—140

Used for manufacturing rider ring and retainer ring.