Smith Seal - Part of Zatkoff Seals & Packings HOME ABOUT » SERVICES » PRODUCTS CONTACT TEFLON / PTFE SEALS Seals made from PTFE (Polytetrafluoroethylene) are used where many other sealing materials (like elastomers, fabric materials, etc.) fail to meet the required temperature range, chemical resistance or friction and wear requirements. PTFE has Thermal stability across a wide temperature range. PTFE’s high melting point (342 °C) and morphological characteristics allow components made from the resin to be used continuously at service temperatures up to 260 °C. Above this temperature the components’ physical properties tend to decrease, causing heat-aging and material degradation. PTFE is used at cryogenic temperatures to seal critical media such as liquid nitrogen (-196 °C), liquid hydrogen (-253 °C) and liquid helium (-269 °C). PTFE has the unique ability to resist material degradation, heat-aging and alteration in physical properties during temperature cycling. Low friction/dry running capability PTFE has the lowest friction coefficient of any known solid. It has self-lubricating capabilities, offering continuous dry running ability in dynamic sealing applications. Extreme chemical resistance: The intrapolymer chain bond strengths of PTFE preclude reaction with most chemicals, thereby making them chemically inert at elevated temperatures and pressures with virtually all industrial chemicals and solvents. PTFE is suitable for contact with food and satisfies FDA requirements. Other outstanding properties are: Reduced stick-slip Unlimited shelf life PTFE does not age over time and is not affected by ultraviolet light. No explosive decompression PTFE is not susceptible to saturation of high-pressure gas that can expand violently and cause explosion of the material when the pressure is suddenly removed. No swelling due to moisture absorption. Safe for use in vacuum conditions Excellent electrical properties: High dielectric strength, low dielectric constant and very high electrical resistance. PRODUCT CATEGORIES Go to a specific category to search by item number, item name or item description. O-Rings Gaskets Hydraulic / Pneumatic Seals Custom Molded Products Extrusions & Cord Stock Teflon / PTFE Seals Rotary / Shaft Seals Fastener Seals Shims Oil Seals Metallic Seals Inflatable Seals Urethane Products Additional Products NEW PRODUCTS WeButex Thermosets Vibra-TITE Sealants and Adhesives GET A QUOTE Quick Quote Request 8441 Garvey Drive Raleigh NC 27616 Copyright © 2021 Smith Seal - Part of Zatkoff Seals & Packings Sitemap