Materials

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.

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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
Polytetrafluoroethylene
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

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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

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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

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KEY: 5 - Superior 4 - Excellent 3 - Good 2 - Fair

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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 Colorability, low cost

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