Short answer: request custom PTFE gasket samples by sending the drawing with quantity context, and expect three things from a good supplier: samples from the production process (not a special run), accompanying lot documentation, and a written note of any process differences between sample and bulk. Free samples are common for standard items; custom parts may carry a modest charge, often credited at order.
How to make samples predictive
- Same material lot class: a sample from premium resin and a bulk order from run-of-mill proves nothing — ask explicitly.
- Same cutting method: die-cut sample vs waterjet bulk differs in edge quality; name the method for both.
- Test at duty, not on the bench: compress at your bolt load, cycle at your temperatures — bench fitment alone validates geometry only.
Chunhuan provides first-article samples with material certificates across gasket sheet and cut parts since 1985. Send the drawing and duty; the sample conversation should include the production-process statement above.
Frequently Asked Questions
Are custom PTFE gasket samples free?
Standard items usually free; custom geometry may carry a charge, typically credited at the production order. Ask the policy up front.
How do I make a gasket sample meaningful?
Same material lot class, same cutting method as production, and testing at duty conditions (bolt load, temperature cycles) rather than bench fitment.
What documents should come with samples?
Material certificate with tested values and lot reference, so the sample is traceable to the process that will make your order.
English
Russian
French
Spanish