Seal Compatibilty

Seal Compatibility with Common Fluids
R = Recommended   S = Satisfactory   M = Marginal   U = Unsatisfactory   I = Insufficient Data
 

Buna N

Butyl

Corfam

EP

Viton

Silicone

Neoprene

Natural
Rubber

Polyurethane

Teflon

Water Glycol

R

R

R

R

R

S

S

R

U

R

Water/Oil Emulsion

R

U

R

U

R

I

S

U

U

R

Water Soluble Oil

R

R

R

R

R

R

M

R

M/U

R

Water - Fresh

R

R

R

R

R

R

M

R

M/U

R

Water -Salt

R

R

R

R

R

R

M

R

M/U

R

Phosphate
Ester

U

R

M/U

R

R

M

U

U

M

R

Polyol Ester

R*

U

R

U

R

U

S/M

U

S

R

Silicate Ester

S

U

I

S

R

U

R

U

R

R

Chlorinated
Hydro C

M

S

I

S

R

S

U

U

U

R

Kerosene

R

U

R

U

R

U

M/U

U

R

R

Gasoline

R

U

R/S

U

R

U

U

U

R

R

Petroleum
Preservative Oil

R

U

R

U

R

U

R

S

R

R

Petroleum
Base

R

U

R

U

R

U

S

U

R

R

*Medium to high nitrile content >30% recommended for polyol ester fluids.

Note: This is a general guideline only. Complex chemical blends may not follow recommendations on this chart. You should always run seal compatibility testing on questionable applications. Quaker Chemical makes no guarantees, implied or expressed about the accuracy of this data.

Other Names For Seal Materials:
Buna N = Nitrile or NBR
Butyl = Butyl Rubber or IIR
EP = Ethylene Propylene Rubber or EPM or EPR
Viton = Fluorocarbon or FPM
Silicone Rubber = SI
Neoprene = Chloroprene or CR
Natural Rubber = Natural Polysoprene or NR
Teflon = Polyetrafluoroethylene or TEF*  Not an elastomer. Teflon Cold flows over time.

 
     
   

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