PTFE Plastic Washers
Key Properties
- Broadest chemical resistance
- Lowest friction coefficient
- FDA compliant
- Non-stick surface
Why specify PTFE for plastic washers?
PTFE (polytetrafluoroethylene, sold under brand names like Teflon®) offers the broadest chemical resistance and one of the lowest coefficients of friction available in a machinable plastic. Cannon Gasket die-cuts and CNC machines custom PTFE washers for chemical processing, semiconductor, food and beverage, and high-temperature electrical applications. Available as virgin PTFE per AMS 3652 and ASTM D3308, plus glass-, moly-, graphite-, and bronze-filled grades, expanded PTFE, and PFA.
Properties of PTFE plastic washers
Cannon Gasket cuts PTFE plastic washers to your drawing in durometer and thickness specifications of Shore D 50–65. Virtually inert to all chemicals, solvents, acids, and bases. FDA compliant. Lowest coefficient of friction of any solid material.
PTFE tolerances and customization
Standard dimensional tolerances on PTFE plastic washersland around ±0.010" to ±0.015" on OD and ID, depending on material durometer and thickness. Tighter tolerances are available on select grades. Cannon Gasket cuts PTFE to custom profiles in-house and matches lead times to your production volume. PSA backing, pad printing, custom packaging, and kitting are all on the menu when you need them.
How PTFE Performs
- Inert to virtually all chemicals — broadest chemical resistance of any plastic. - Coefficient of friction comparable to ice on ice. - Excellent electrical insulator across the full temperature range. - Available in virgin (FDA), glass-filled, bronze-filled, and carbon-filled grades.
Common Washer Applications
Chemical processing pump and valve isolators, semiconductor process tool washers, food and beverage processing (virgin / FDA grade), cryogenic test rigs, high-voltage electrical insulators, low-friction bearing washers, and corrosion-resistant flange isolators.
Filled vs Virgin PTFE
- Virgin PTFE — maximum chemical resistance and lowest friction. FDA-compliant. Lower load-bearing. - Glass-filled (15–25%) — better wear resistance and creep resistance. - Carbon-filled — improved wear and lower thermal expansion.
When to Choose Another Material
For high load-bearing without chemical contact, Delrin (Acetal) is stiffer at lower cost. For high mechanical strength at temperature, PEEK.
Manufacturing Methods
Die-cut for thin-gauge PTFE sheet (skived film), compound-die-cut for tight tolerance, and CNC-machined to ±.0005 for thicker stock and complex geometries.
PTFE grades and materials
Available as virgin PTFE per AMS 3652 and virgin PTFE per ASTM D3308, glass-filled PTFE, moly-filled PTFE, graphite-filled PTFE, expanded PTFE, and PFA. PTFE is chemically inert, with a low coefficient of friction, superior electrical insulating properties, and a melting point over 600F.
Applications
- Chemical processing equipment
- Medical device assemblies
- Food processing machinery
- Semiconductor manufacturing
- Pharmaceutical equipment
- Scientific instruments
Industries Served
- Chemical Processing
- Medical
- Food & Beverage
- Semiconductor
- Pharmaceutical
- Scientific
Manufacturing Capabilities
- Precision die cutting
- Custom ID/OD/thickness
- In-house tooling
- Tight tolerances
- Prototype to production
- ISO 9001 certified
909.355.1547
sales@cannongasket.com
https://cannongasket.com/plastic-washers/ptfe-plastic-washers/
