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Sealing material

AFLAS (TFE-P)

Tetrafluoroethylene-Propylene Elastomer — the oilfield/steam specialist — outstanding resistance to bases, amines, H₂S and steam.

A fluoroelastomer built for steam, hot water, strong bases, amines and sour (H₂S) service where standard FKM degrades.

Service temp +14°F to +446°F (-10°C to +230°C)

Overview

What AFLAS is best at

AFLAS (TFE-P, an AGC trade name) has a distinctive resistance profile: exceptional performance against steam, hot water, strong bases, amines and sour (H₂S) environments, plus good electrical properties and high-heat capability. Trade-offs are poor low-temperature flexibility and higher hardness/lower rebound than FKM.

Standout resistanceHeatOzone & weatherAcidsWater & steamAlso strong inOil & fuelSolvents / ketonesAbrasionCompression set
Continuous service temp+14°F to +446°F (-10°C to +230°C)
Hardness60–90 Shore A
Tensile strength1,500–2,500 psi
HeatExcellent
Low temperaturePoor
Ozone & weatherExcellent
Oil & fuelGood
AcidsExcellent
Solvents / ketonesGood
Water & steamExcellent
AbrasionGood
Compression setGood

Typical published ranges — final properties depend on the specific ARC compound, cure system and fillers. Request a compound-specific data sheet for design values.

Where it's used

Typical applications by industry

Oil & Gas

Sour-gas (H₂S) downhole seals, amine-treating service, steam-injection and packer seals.

Chemical Processing

Seals and gaskets for hot caustic, amines and mixed aggressive media.

Power & Energy

Steam-service seals and gaskets, geothermal sealing.

Defense & Industrial

High-temperature seals needing base and steam resistance.

Choose AFLAS when

  • Sour service (H₂S), amines, strong bases or steam where FKM fails
  • High-heat sealing combined with caustic or amine chemistry

Consider an alternative when

  • Low-temperature service → FKM (low-temp grade) or fluorosilicone
  • Broadest universal chemical resistance → FFKM

Need AFLAS parts to spec?

Send your service conditions or drawing — our engineers will confirm the right AFLAS compound and a path to production.

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