DRAWING-BASED CUSTOM PARTS
Custom PTFE Gaskets
Chemically resilient PTFE gaskets machined or cut for demanding fluid, process and laboratory sealing interfaces.
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Made for Your Application
PTFE gasket stock is converted into flat rings, washers and complex profiles where chemical compatibility and non-stick behaviour take priority. Grade selection—virgin, expanded or filled—helps balance creep resistance, compressibility and media exposure.
Material advantage
PTFE is valued for its broad resistance to many chemicals, low surface energy and high service temperature compared with common elastomers.
Key features
- Broad chemical resistance
- low-friction surface
- low moisture absorption
- custom ring and bolt-hole geometries
- filled-grade options.
Custom Specifications
| Thickness range | 0.25-12 mm |
|---|---|
| Typical thickness | 1.5-3 mm |
| Size range | 3 mm ID washers to 1,500 mm OD rings |
| Temperature range | -200 to 260 C; pressure and grade dependent |
| Hardness range | Typically Shore D 50-65; filled grades vary |
| Tolerance | Typically +/-0.15 mm profile; tighter tolerances by CNC machining |
PRODUCT EXAMPLES
Custom Part Gallery
Manufacturing & Finish Options
Production process
Die cutting, CNC machining, skiving and waterjet cutting
Manufacturing notes
Material creep, flange finish and bolt-load distribution are reviewed before choosing virgin versus filled or expanded PTFE.
Adhesive options
Usually supplied without adhesive; optional temporary mounting tabs may be evaluated for handling only.
Surface options
Natural PTFE, skived sheet finish, etched bondable face or filled-grade finish.
Where It Fits
Best for
- Chemical process flanges, laboratory equipment, valves, food and pharmaceutical equipment when the selected grade meets the application requirements.
Common industries
- Chemical processing, laboratories, water treatment, food processing equipment, pharmaceuticals and semiconductor equipment.
Consider another option when
Joints that cannot maintain controlled bolt load, high-vibration flanges without support, or applications requiring a highly elastic gasket.
MATERIAL OPTIONS
Choose the Right Material Construction
PROCESS OPTIONS
Available Manufacturing Routes
Design & Engineering Notes
Design guidelines
Use sufficient flange width and uniform bolt spacing; avoid relying on PTFE elasticity to accommodate gross flange misalignment.
Engineering notes
PTFE can cold-flow under load. Consider creep-resistant filled grades, compression limiters or retorque procedures where appropriate.
Selection Guide
Use virgin PTFE for high purity and broad media exposure, ePTFE for conformability, and filled PTFE where improved creep behaviour is needed.
Material comparison
PTFE exceeds EPDM and silicone in chemical and heat resistance, but elastomer gaskets normally recover better after compression.
Standards & requirements
Customer drawing, material certification requirements and applicable flange or process specifications supplied by purchaser.
Drawing Requirements
PDF, DXF, DWG, STEP, AI, CAD screenshots and dimensioned sketches can be reviewed. Don’t have a CAD drawing? A dimensioned PDF, sketch or clear image may be sufficient for an initial review.
Frequently Asked Questions
When should I use filled PTFE instead of virgin PTFE?
Filled PTFE is often considered where improved creep or wear behaviour is needed; chemical compatibility with the filler must be checked.
Can PTFE gaskets seal uneven flanges?
Expanded PTFE is more conformable than virgin sheet, but major flange distortion should be corrected rather than left to the gasket.
Does PTFE work with all chemicals?
PTFE has broad resistance, but a compatibility review remains necessary for concentration, temperature, pressure and contamination limits.
Why is bolt torque important for PTFE?
Controlled, even bolt load helps prevent leakage while avoiding excessive cold flow and gasket extrusion.
DRAWING-BASED MANUFACTURING
Have a Part to Cut?
Send your drawing, dimensions, material requirements and quantity. Our team will review the project and prepare a custom quotation.