Refrigerant compatibility is the defining challenge in HVAC and refrigeration sealing. FITCO supplies O-Rings tested and approved for use with HFCs (R134a, R410A, R32), HFOs (R1234yf), ammonia (R717) and CO₂ (R744) refrigerant systems used across UAE and GCC commercial and industrial installations.
Refrigerant Compatibility
- R134a, R404A, R410A, R32 — FKM, EPDM, Neoprene
- R1234yf, R1234ze (HFOs) — FKM, EPDM
- Ammonia (R717) — EPDM, Neoprene, Silicone (not NBR or FKM)
- CO₂ / R744 — EPDM, FKM (high-pressure grades)
- Mineral refrigeration oils — NBR
Recommended Materials
- EPDM — Compatible with most HFC and ammonia refrigerants
- FKM — HFC refrigerants with synthetic lubricants; high-temperature compressor seals
- Neoprene — Freon systems; flame-retardant for building HVAC
Applications
- Scroll, screw and reciprocating compressors
- Expansion valves and solenoid valves
- Evaporators and condensers
- District cooling plant and chiller systems
- Cold room and blast freezer equipment
- VRF and split air conditioning systems