The right material for the real service
Wear-part life is decided by the material. We select thermoplastics and metals for your actual gas composition, pressure and temperature — including sour, wet and hydrogen duty.
Non-metallic wear materials
Thermoplastics for rings, seats & packing
PEEK
High strength and temperature capability for valve plates, rings and seats in demanding duty.
PEEK-CF (carbon-filled)
Added stiffness, creep resistance and thermal conductivity for high-pressure and abrasive service.
PTFE & filled PTFE
Low friction and chemical resistance for packing and rider elements, filled for wear resistance.
PA / Nylon & PPS
Cost-effective thermoplastics for moderate-duty rings and bands.
Polyimide (Vespel-type)
High-temperature, low-wear elements where thermoplastics reach their limit.
Custom compounds
Filled and reinforced grades matched to abrasion, temperature and chemical exposure.
Metals
Metallic parts & sour-service grades
Bronze & aluminium-bronze
Bearings, bushings, guide and wear surfaces with good conformability.
Carbon & alloy steel
Rods, seats, valve bodies and running-gear parts to OEM specification.
Stainless steel
Corrosion resistance for wet and aggressive process streams.
NACE MR0103 / MR0175
Sulfide-stress-cracking-resistant grades for sour (H₂S) service.
Coatings & treatments
Surface treatments to raise hardness, reduce friction and resist corrosion.
Certified material
EN 10204 3.1 / 3.2 certificates available on request.
Engineering-led selection
Material selection driven by your conditions
We don't pick materials from a default table. Using our ValveDyn Pro engineering platform, we screen the service — corrosive compounds, wet CO₂, liquids, solids, lubrication regime, discharge temperature — and recommend the ring-plate, seat-face, spring and valve-housing materials that fit.
- Wet-CO₂ / carbonic-acid attack screening
- Sour-service (NACE) material rules
- Temperature limits vs. discharge temperature
- Abrasion and liquid-carryover considerations
Not sure which material to run?
Give us your gas and conditions — we'll recommend a longer-life option.