Universal chemical resistance.
Lowest friction.
Non-stick.
PTFE (Teflon) resists essentially every chemical at all concentrations and temperatures to 260 °C. Lowest coefficient of friction of any plastic. Non-stick surface, FDA compliant, biocompatible. The ultimate material for chemical processing, fluid handling, and release applications.
PTFE grades.
Virgin PTFE for pure chemical inertness, filled grades for improved mechanical properties — each filler targets specific wear, strength, or cost characteristics.
Virgin PTFE
Unfilled. Highest chemical purity, FDA compliant, best electrical properties. Used for chemical reactor linings, food contact, pharmaceutical fluid handling.
PTFE-GF25
Glass-filled for improved creep resistance and wear. Reduced chemical purity. Used for bearings, seals, pump components.
PTFE-CF25
Carbon-filled for electrical conductivity and improved wear. Slightly ESD-dissipative. Used for electrical applications, static-sensitive fluid handling.
PTFE-Bronze
Bronze-filled for heavy-duty bearing applications. Improved thermal conductivity, high-PV rating. Used for industrial bushings and bearings.
PTFE-MoS2
Molybdenum disulfide filled for ultimate low friction performance. Used for specialty sliding applications, space mechanisms.
Virgin PTFE Medical
FDA/USP Class VI compliant virgin PTFE for medical device applications — catheters, implants, fluid contact.
Why PTFE is irreplaceable.
PTFE's unique combination of properties — chemical inertness, low friction, non-stick, broad temperature range — cannot be replicated by other plastics.
Universal chemical resistance
Resists essentially all chemicals — acids, bases, solvents — at any concentration. Only attacked by molten alkali metals and elemental fluorine.
Lowest coefficient of friction
0.05 static, 0.04 dynamic against steel. No other solid material approaches this. Self-lubricating under any conditions.
Non-stick surface
Nothing sticks to PTFE. Standard for mold release, food contact non-stick, industrial release applications.
Broad temperature range
-200 °C to +260 °C continuous service. Only elastomer-like plastic that handles cryogenic AND elevated temperature.
PTFE applications.
Chemical valve seats
Ball valve seats, needle valve seats for chemical service — universal resistance
Seals & gaskets
Chemical flange gaskets, shaft seals — chemical inertness + low friction
Bushings
Low-friction bushings — running dry against any metal without galling
Chemical reactor linings
PTFE-lined chemical vessels for corrosive processing
HPLC fittings
Analytical instrument fluid fittings — chemical compatibility + purity
Food processing
FDA-compliant food handling — non-stick conveyor components, mold release
Medical catheters
Medical catheter lining, implantable tubing — biocompatibility + low friction
Electrical insulators
High-temperature wire insulation, coaxial cable dielectric
Aerospace seals
Aircraft fluid system seals — fuel compatibility, wide temperature range
PTFE finishing.
As-machined
White semi-translucent finish. Ra 1.6 µm typical. Cold-flow behavior means finish evolves slightly over time.
Cannot bond
PTFE surface cannot be bonded without etching. Plasma or chemical etch required for adhesive applications.
Laser marked
Limited — PTFE dulls laser marks over time. Mechanical engraving more permanent.
Cannot weld
Traditional welding not possible. Specialized sintering can join PTFE but requires specialized equipment.
Machined threads
Threads possible but creep under load — prefer Heli-Coil inserts for threaded features.
Pressed inserts
Metal inserts pressed into PTFE common for fastener points — relies on PTFE's compliance.
FEP/PFA alternatives
For fluorocarbon applications needing weldability, consider FEP or PFA alternatives (heat-weldable).
Virgin grade only
Most finishing processes limited to virgin PTFE — filled grades have reduced processing flexibility.
PTFE / Teflon questions.
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