Kaxite Sealing manufactures PTFE powder in four standard grades for every major processing route — fine grade for automatic molding and paste extrusion, medium grade for compression molding and ram extrusion, coating grade for isostatic molding, and agglomerated additive grade for plastics, inks and lubricants. Particle size 25–500 µm, bulk density 300–600 g/l, melting point 327 °C, dielectric strength 60 kV/mm, service temperature -200 to +260 °C, chemically inert across pH 0–14. FDA 21 CFR 177.1550 compliant. Custom particle size distribution, bulk density and pigmented blends to drawing. Free samples, bulk wholesale and 7–15 day lead times.
Beyond generic "PTFE is chemical resistant" claims, three properties determine whether PTFE powder succeeds or fails in molding, extrusion or additive formulation. These are the three we engineer for.
Batch-to-batch uniformity in particle size distribution. Fine grades sinter to higher density for thin sections; coarse grades flow better for automatic molding. Custom PSD on request.
Molding · Extrusion · CoatingVirgin PTFE powder produced directly from polymerization — no regrind, no reprocessed scrap, no contaminants. FDA 21 CFR 177.1550 compliant for food and pharmaceutical contact.
Food · Pharma · SemiconductorMelting point 327 °C with thermal decomposition onset above 400 °C. Continuous service -200 to +260 °C. Unlike most polymers does not become brittle at cryogenic temperature.
Cryogenic · High-heat · SinteringEach grade is engineered for a distinct combination of particle size, bulk density and processing method. Use this guide to shortlist the right grade before requesting a quotation.
Fine particle powder engineered for automatic molding and paste extrusion. Sinters to higher density for thin-walled tubing, fine strand wire coating and precision components.
Medium particle powder for compression molding and ram extrusion. The workhorse grade for gaskets, sheets, rods and heavy-duty bearings where higher flow and porosity control matter.
Coating-grade powder for isostatic molding and anti-corrosion lining. Optimised for complex near-net shapes and uniform coating thickness on industrial parts.
Agglomerated additive powder for thermoplastics, coatings, lubricants and inks. Adding 5–20% dramatically reduces friction and increases wear resistance without altering processing parameters.
Virgin and filled PTFE powder produced directly from polymerization with batch-to-batch uniformity. Available in four grades covering automatic molding, paste extrusion, compression molding, ram extrusion, isostatic molding, coating and additive formulation. Custom particle size, bulk density and pigmented blends to drawing.
| Grade Code | Particle Size (µm) | Bulk Density (g/l) | Processing Method | Primary Application |
|---|---|---|---|---|
| KX-PTFE-F101 | 25 – 35 | 450 – 550 | Automatic molding · Paste extrusion | Thin-walled tubing, fine strand wire coating |
| KX-PTFE-M201 | 400 – 500 | 350 – 450 | Compression molding · Ram extrusion | Gaskets, sheets, rods, heavy-duty bearings |
| KX-PTFE-C301 | 100 – 150 | 500 – 600 | Isostatic molding · Coating | Complex near-net shapes, anti-corrosion linings |
| KX-PTFE-A401 | 30 – 50 (agglomerated) | 300 – 400 | Additive for plastics, inks, lubricants | Wear reduction, friction modification |
| Custom | To drawing | To drawing | Custom blends | Pigmented and modified formulations |
Six industries where virgin, filled or additive PTFE powder forms the base material for finished sealing, insulation and anti-friction components.
Compression molded gaskets, seals, tank linings and pipe linings for reactors, pumps and heat exchangers. Pairs with our pure PTFE gaskets for finished flange sealing.
Dielectric strength 60 kV/mm for wire and cable insulation, high-frequency components, coil bobbins and semiconductor parts. Pairs with our PTFE tubes for full flow-path purity.
FDA 21 CFR 177.1550 compliant grades for non-contaminating seals, conveyor parts and fluid handling. Zero extractables and no oil carry-over. See our PTFE sheet range for finished skived and molded sheet.
Fuel system seals, bearing pads and insulating components. Wide temperature stability from cryogenic to +260 °C. Pairs with our PTFE hoses in fuel line assemblies.
Low-friction components, wear plates and slide bearings. Additive grade reduces coefficient of friction in polyamide, acetal and PEEK composites. Pairs with our PTFE packing in dynamic sealing assemblies.
Paste extrusion grade for fine strand wire coating and high-temperature electrical insulation. Pairs with our PTFE fiber in combined insulation builds.
Virgin PTFE powder is produced directly from the polymerization process without any previous molding history — highest purity, consistency and mechanical properties. Reprocessed PTFE made from recycled scrap or off-spec material may contain contaminants, have variable particle size and exhibit reduced mechanical strength and chemical resistance. Not suitable for critical applications.
Keep in original unopened moisture-proof packaging in a cool, dry and clean environment. Ideal storage temperature 10–30 °C. Avoid direct sunlight and heat sources. Once opened, use promptly or reseal tightly. PTFE powder has an essentially indefinite shelf life when stored properly.
Yes. Our KX-PTFE-A401 grade is specifically designed as an additive. Adding 5–20% PTFE powder to thermoplastics (polyamide, acetal, PEEK), coatings, lubricants or inks can dramatically reduce the coefficient of friction, increase wear resistance and enhance anti-stick properties without significantly altering processing parameters.
PTFE itself is chemically inert and non-toxic at room temperature, but fine powders pose an inhalation risk. Processing above 300 °C can produce fumes hazardous if inhaled. Handle in well-ventilated areas with appropriate PPE (dust masks NIOSH N95 or greater, safety glasses). Avoid creating airborne dust. Proper sintering ventilation is mandatory.
Particle size is critical. Finer powders (KX-PTFE-F101) offer better sintering behavior, resulting in higher density, smoother surface finish and improved mechanical properties — ideal for thin sections and paste extrusion. Coarser powders (KX-PTFE-M201) have better flowability for automatic molding and can produce parts with higher porosity if required.
Yes. We develop custom PTFE powder blends with modified particle size distributions, specific bulk densities, or colourants for identification. Our technical team assists with material selection, troubleshooting processing issues and optimizing manufacturing parameters. Send your specification for engineering feedback within 24 hours.
Send us your grade code or application (automatic molding, paste extrusion, compression molding, ram extrusion, isostatic molding, coating or additive), particle size requirement, bulk density, quantity, colour or pigmentation specification and any certifications required (FDA, RoHS, REACH) — or a finished-part drawing. Our export team replies within 24 hours and confirms grade selection, lead time, packaging and documentation before you place a bulk order.
