Virgin vs Filled PTFE
The appropriate PTFE construction depends on media, temperature, load and the required behavior in service. State the application requirement.
DRAWING-BASED CUSTOM PARTS
Custom PTFE Gaskets
Chemically resilient PTFE gaskets machined or cut for demanding fluid, process and laboratory sealing interfaces.
Include the media, temperature, pressure, flange condition and drawing so the material construction can be reviewed.
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 approach
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
Typical values for reference only. Final material grade, tolerance and dimensional capability are confirmed after drawing review.
| Part type | Custom PTFE gasket |
|---|---|
| Available materials | PTFE constructions subject to project review |
| Thickness range | Material and joint dependent |
| Maximum sheet / part size | Project dependent |
| Profile tolerance | Drawing review required |
| Thickness tolerance | Material grade dependent |
| Adhesive options | Not typically required |
| Delivery format | Individual parts or nested sheets |
| Media / temperature | Application and construction dependent |
MATERIAL SELECTION
PTFE Gaskets Material Comparison
Use this as a starting point only; the selected grade and construction are confirmed against the drawing and application.
| Material | Construction | Review Focus | Best For |
|---|---|---|---|
| PTFE | PTFE material options | Confirm creep, media, temperature and clamp load | Specialty chemical and low-friction applications |
PRODUCT EXAMPLES
Custom Part Gallery
CONVERTING OPTIONS
Manufacturing & Finish Options
Material creep, flange finish and bolt-load distribution are reviewed before choosing virgin versus filled or expanded PTFE.
DESIGN REVIEW
Engineering Guide
Practical points to include when selecting foam and preparing a drawing for review.
Cold Flow and Creep
PTFE can respond differently under sustained clamp load. Joint design and compressed thickness should be reviewed together.
Chemical Compatibility
Compatibility requires the actual media, concentration, temperature and exposure conditions, not a general chemical-resistance claim.
Flange Conditions
Flange finish, bolt pattern, available load and gasket geometry affect the selected construction and sealing outcome.
Applications / Where It Fits
PTFE gasket selection should consider the specific media, temperature, pressure, flange finish, clamp load and the selected PTFE construction.
When This Part May Not Be the Best Choice
Joints that cannot maintain controlled bolt load, high-vibration flanges without support, or applications requiring a highly elastic gasket.
PROJECT DELIVERY
Manufacturing Capabilities
Available options are confirmed against the selected material, drawing and order requirements.
| Capability | Options |
|---|---|
| Cutting | CNC knife cutting / die cutting after drawing review |
| Adhesive | Not typically required |
| Delivery format | Individual parts / nested sheets |
| Prototype | Project review available |
| Production | Prototype to production-volume review |
| Drawing formats | PDF / DXF / DWG / STEP |
| Inspection | Critical requirements confirmed during drawing review |
| Secondary operations | Nested layouts and kit packing where suitable |
Drawing Requirements
Recommended drawing formats
Please include
- Overall dimensions
- Thickness
- Critical tolerances
- Quantity
- Flange and bolt pattern
- Fluid / media
- Operating temperature
- Pressure condition
- Clamp-load information
No drawing available? Send the flange geometry, fluid, temperature, pressure and clamp conditions for feasibility review.
Frequently Asked Questions
When should PTFE be considered for a gasket?
PTFE is reviewed when the application conditions, media, temperature, load and joint design support an appropriate PTFE construction.
What is important about PTFE creep?
Sustained clamp load, temperature, gasket thickness and flange condition should all be reviewed because PTFE response is construction and application dependent.
Can you make PTFE gaskets with bolt holes?
Yes. Include the full bolt pattern, cutouts and critical sealing dimensions on the drawing.
How do I specify chemical exposure?
Provide the actual media, concentration, temperature, pressure and exposure duration for review.
Can PTFE gaskets be supplied as nested sheets?
Individual and nested-sheet delivery can be reviewed around the assembly workflow.
Can you help select the PTFE construction?
Provide the joint and service conditions so the construction can be considered as part of a project review.
Can prototypes be reviewed?
Prototype feasibility depends on construction, geometry, quantity and required delivery format.
Can you make ptfe gaskets to my drawing?
Yes. CAD files, PDFs, dimensioned sketches and clear reference images can be reviewed for a custom quotation.
What information is needed for a quote?
Include the drawing, material preference if known, critical dimensions, quantity and the application environment.
How is a production route selected?
The manufacturing route is reviewed against the material, profile, critical requirements, quantity and delivery format rather than assumed from the part name.
CONTINUE YOUR RESEARCH
Related Parts, Materials & Capabilities
DRAWING-BASED MANUFACTURING
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