Expanded PTFE Gasket

Expanded PTFE (ePTFE) is a highly expanded form of PTFE with a unique microporous structure that provides superior compressibility and conformability compared to standard PTFE. While standard PTFE is dense and prone to cold flow under load, ePTFE offers zero cold flow, excellent recovery after compression, and better sealing performance on uneven or damaged flange surfaces. ePTFE is ideal for applications where standard PTFE would fail due to its improved mechanical properties and sealing ability.

ePTFE gaskets operate across an exceptional temperature range from -260°C to +260°C (-436°F to +500°F). For pressure ratings, they handle vacuum conditions up to 207 bar (3000 PSI), making them suitable for demanding chemical processing, steam systems, and high-pressure industrial applications. The exact pressure-temperature limits may vary based on flange condition, bolt load, and specific media — contact LIANTUO for application-specific recommendations.

No, one of the key advantages of ePTFE gaskets is that they require no mold or tooling. LIANTUO uses precision CNC machining to cut gaskets directly from ePTFE sheet material, allowing any shape — round, oval, rectangular, or irregular — without setup costs. Simply send your dimensions, drawings, or a sample, and they will produce the exact gasket you need with no minimum order quantity.

Yes, ePTFE gaskets are FDA and USP Class VI compliant, making them fully suitable for food, beverage, pharmaceutical, and biotech applications. The material is non-toxic, chemically inert, and does not impart taste or odor. It resists cleaning agents, steam sterilization, and a wide range of process chemicals — providing reliable, contamination-free sealing in the most demanding hygienic environments.