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Chemical Compatibility

Wetted Parts Material Options
Acetal
Material used for seats, balls & wetted body parts
• Wide range of solvent resistance
• Withstands extreme fatigue
• Good level of abrasion-resistance
• Groundable for use with flammables
• Not for acids or bases
Aluminium
Material used for air motor & wetted body parts
• Medium corrosion and abrasion resistance
• Not for use with HHC’s
Hardened Stainless Steel
Material used for seats & balls
• Moderate chemical resistance
• Good abrasion resistance
Kynar
Material used for wetted body parts & seats
• Strong chemical resistance:
acids and bases
• Good abrasion resistance
• High temperature resistance
Polypropylene
Material used for air motor, wetted body parts, seats & balls
• Wide chemical compatibility
• General purpose
• Inexpensive alternative
Stainless Steel
Material used for wetted body parts, seats & balls
• High level of corrosion and abrasion
resistance
• Passivated for use with waterbase coatings
Buna-N
Material used for balls & diaphragms
• Good for petroleum based fluids
• Not for strong solvents or chemicals
Hytrel
Material used for seats, balls & diaphragms
• Good abrasion resistance
• Often substituted for Buna-N
Santoprene
Material used for seats, balls & diaphragms
• Good abrasion and chemical resistance
• Not for use with solvents
• Can substitute for EPDM or EPR
PTFE
Material used for seats, balls & diaphragms
• Excellent when used with solvents
• Poor abrasion resistance
• Widest chemical compatibility with fluids
Viton
Material used for seats, balls & diaphragms
• High level of corrosion resistance
with acids
• Resists unleaded fuels
Geolast
Material used for seats, balls & diaphragms
• Good abrasion resistance
• Same chemical compatability as Buna
and Hytrel
Ductile Iron
Material used for wetted body parts
• High abrasion resistance
• Low cost alternative to stainless steel
Neoprene
• Good abrasion and chemical resistance
• Not for use with solvents