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Material Chemical Compatibility Guidelines
Reference Information

Material Chemical Compatibility Guidelines

MATERIALS

The chemical compatibilities listed are meant as guidelines only. Material samples for immersion testing can be requested from The Lee Company. This is the most accurate method of determining the chemical compatibility of our materials and our customers’ specific fluids.

Rating 5 4 3 2
Compatibility Superior Excellent Good Fair
PLASTIC MECHANICAL STRENGTH GENERAL CHEMICAL RESISTANCE THERMAL RESISTANCE FEATURED PROPERTIES
EVA
Ethylene-vinyl acetate		 3 3 2 Physically conformable
LCP
Liquid crystal polymer		 5 4 4 Superior balance of all properties
PBT
Polybutylene terephthalate		 3 3 3 Good balance of all properties
PC
Polycarbonate		 3 3 3 Optical clarity
PCTFE
Polychlorotrifluoroethylene		 3 4 3 Resists most chemicals, zero water absorption
PEEK
Polyetheretherketone		 4 4 5 Thermal stability & good solvent resistance
PEI
Polyetherimide		 3 4 4 Translucent, amber color. Good solvent resistance
PES
Polyethersulfone		 3 3 4 Dimensionally stable
PFA
Perfluoroalkoxy resin		 2 5 2 Chemical & solvent resistant
PMMA
Polymethyl Methacrylate		 3 3 3 Transparent, good general properties
POM
Polyoxymethylene		 3 3 2 Wear resistance
PPA
Polyphthalamide		 3 3 4 Thermal and dimensional stability
PPS
Polyphenylene sulfide		 4 3 4 Very good mechanical strength
PSU
Polysulfone		 3 3 4 Low moisture absorption, transparent
PTFE
Polytetra fluoroethylene		 2 5 2 Unsurpassed chemical resistance
PVC
Polyvinylchloride		 3 3 3 High flexibility
PVDF
Polyvinylidene fluoride		 3 4 3 Chemical & solvent resistant, porous form
UHMW PE
Ultra-high molecular weight polyethylene		 3 3 3 Porous form, solvent resistant
ELASTOMER WEAR RESISTANCE GENERAL CHEMICAL RESISTANCE THERMAL RESISTANCE FEATURED PROPERTIES
EPDM
Ethylene/propylene rubber		 3 4 3 Very good solvent resistance
FKM
Fluoroelastomer		 5 4 4 Superior balance of properties
CR
Polychloroprene		 3 3 3 Good balance of properties
FFKM
Perfluoroelastomer		 3 5 5 Unsurpassed chemical resistance
VMQ
Silicone		 3 3 4 Good balance of properties
OTHER MATERIALS MECHANICAL STRENGTH GENERAL CHEMICAL RESISTANCE THERMAL RESISTANCE FEATURED PROPERTIES
TZP
Tetragonal Zirconia Polycrystal		 5 5 5 Superior surface finish and excellent dimensional stability
Sapphire
(Aluminum Oxide)		 5 5 5 Superior surface finish and excellent dimensional stability
ADHESIVES FEATURED PROPERTIES
Epoxy Good adhesive strength to many materials, good chemical resistance
Cyanoacrylate Quick set, high strength
Anaerobic Very high strength, very good chemical resistance
METALS FEATURED PROPERTIES
316 CRES Superior corrosion resistance
430 CRES Good magnetic properties, good corrosion resistance
303, 304 CRES Good machinability, good corrosion resistance
17-4, 17-7 CRES High modulus, good corrosion resistance
FeCr Alloy Excellent corrosion resistance, good magnetic properties
Aluminum Can be colored, low cost