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
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About FES – Air-operated pumping specialists

FES was founded in 1985, supplying an extensive choice of high quality pumping equipment to handle a huge variety of fluids.

At FES, we have always believed in customer service and our flexible approach to solving problems means that we will always try our best to provide a solution to some of the most difficult pumping applications.

The Future

FES believes that it can always learn from its customers because every customer has its own individual idea of what it wants to achieve. It is only through the acquisition of knowledge and experience that FES can continue to provide solutions for the future.

Genuine Diaphragm Pumps, Spares and Accessories

We only provide guaranteed genuine manufactured parts and spares for all brands including both Aro and Wilden pumps.

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