Verified by Rachel Mayfield, Supply Chain Analyst - April 2026
Aflas 100H is a 75 Shore A perfluoroelastomer (FFKM) manufactured by AGC Chemicals. It seals continuously to 230°C and is specified for oilfield chemicals and similar service. FEPM (technically not FFKM) - TFE/propylene copolymer. Cheaper FFKM-adjacent option..
Specifications
| Property | Value |
|---|
| Compound | 100H |
| Manufacturer | AGC Chemicals |
| Maximum continuous temperature | 230°C |
| Minimum temperature | -10°C |
| Hardness | 75 Shore A |
| Colour | Black |
| Material family | FEPM (technically not FFKM) - TFE/propylene copolymer. Cheaper FFKM-adjacent option. |
Where Aflas 100H is used
Aflas 100H is specified for: Oilfield chemicals, sour gas, amines, geothermal.
Limitations: Lower temp ceiling than true FFKM; not for fully fluorinated solvents.
Aflas 100H equivalents from other FFKM manufacturers
If Aflas 100H isn't available, these compounds from competing manufacturers have similar chemistry and operating windows. Always verify against your actual fluid and temperature before substitution.
| Equivalent compound | Manufacturer | Max temp | Hardness | Direct match |
|---|
| Kalrez 6375 | DuPont (Chemours) | 275°C | 75 Shore A | approx |
Available O-ring sizes
Aflas 100H is supplied in:
- BS 1806 sizes: BS001 to BS932 (UK / EU standard, imperial-origin metric)
- AS568 sizes: -001 to -932 (US standard, dimensionally identical to BS 1806)
- ISO 3601 sizes: metric IDs from 2 mm to 670 mm with cross-sections 1.0 mm to 7.0 mm
- JIS B 2401: P, G, S series (Japanese OEM equipment)
- Custom / non-standard: built-to-print for OEM applications
For a list of sizes commonly stocked in the UK, see the BS 1806 size chart, ISO 3601 metric chart, or contact a UK seal specialist below.
UK availability
Aflas 100H is supplied in the UK by FFKM specialists carrying multiple manufacturer lines. Lead time is typically 2-5 working days for stock sizes, 4-8 weeks for custom-moulded sizes. Use the form below to get a quote from a UK FFKM specialist.