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Tetrafluoroethylene rubber compound

Fluoroelastomer is a copolymer of tetrafluoroethylene and propylene. Fluoroelastomer has unique properties compared to traditional FKM-type fluoroelastomers and is suitable for demanding applications such as oil and gas, chemical processes, wires and cables, industrial equipment, food processing, pharmaceuticals, heavy diesel and automotive industries. Fluoroelastomer has excellent weather resistance, heat resistance, acid and alkali resistance, various solvents, ozone and water vapor, especially alkali resistance, which is much better than traditional FKM-type fluoroelastomers. It is classified as FEPM according to ASTM D 1418. and its Chinese name is tetrafluoroethylene rubber.

Technical parameters:

CategoryDetails
Composition Base Polymer: Tetrafluoroethylene-Propylene copolymer (FEPM, e.g., Aflas®)
Reinforcing Fillers: Carbon black (20–40 phr), PTFE (5–15 phr)
Plasticizers: Perfluoropolyether oils (optional, 2–8 phr)
Curing Agents: Peroxide (DCP, 1–3 phr) or bisphenol AF (0.5–2 phr)
Physical Properties Hardness (Shore A): 60–90 (ASTM D2240)
Tensile Strength: 12–25 MPa (ASTM D412)
Elongation at Break: 150–400% (ASTM D412)
Density: 1.8–2.0 g/cm³
Thermal Resistance Service Temperature: -20°C to +230°C (intermittent 250°C)
Thermal Stability: <5% weight loss at 230°C (24h, ASTM D573)
Chemical Resistance Resistant To: Acids, bases, steam, amines, and hydrocarbon fuels
Limitations: Polar solvents (e.g., acetone), ketones, and glycols
Key Applications Automotive: Fuel system seals, O-rings, and turbocharger hoses
Chemical Processing: Aggressive media seals and diaphragms
Oil & Gas: Downhole seals and hydraulic systems
Semiconductor: Plasma-resistant components and vacuum seals
Processing Mixing: High-shear internal mixer (>60°C) or two-roll mill
Molding: Compression/injection molding (200–230°C, 10–25 MPa)
Curing: Post-cure (250°C, 4–8h) for optimal compression set
Safety & Compliance MSDS: Non-flammable (flash point >300°C); avoid inhalation/skin contact
Regulatory: API 6A (oilfield), ISO 10423 (wellhead equipment)
Storage Conditions: Dry, <25°C, away from UV/ozone; shelf life 12–18 months
Packaging: Aluminum-lined bags (prevent moisture/contamination)
Quality Control Testing: Mooney viscosity (ML 1+4. ASTM D1646), compression set (ASTM D395)
Certifications: ISO 9001 (manufacturing), NORSOK M-710 (oil & gas)

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