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Spring-energized polymer seals for critical oil and gas applications

HOUSTON, Tex., October 10, 2012 -- The Technetics Group now offers its PLASTIFLEX spring-energized polymer seals for severe oil and gas industry applications. Designed for use in corrosive, high-pressure, high-temperature and other extreme conditions, the seals are available in three proven configurations and diameters of ¼" to 90". Typical applications include jars and other down-hole tools, pipeline flanges, fluid transfer swivel lines, fluid piping joints and flanges, stirring shafts and fluid metering pumps and control valves.

Spring-energized polymer seals provide longer life and more reliable sealing than conventional elastomeric seals, which cannot withstand temperatures in excess of 300oF, pressures above 3,000 psi, and exposure to acids, caustics, solvents and other harsh chemicals. PLASTIFLEX seals are custom-manufactured from a variety of high-performance composite materials, including PTFE, UHMW, PEEK and polyamide alloys for optimum performance in difficult-to-seal environments.

The seals are available in helical spring, V-finger spring and advance pitch wire spring configurations. Helical spring seals are ideally suited for static applications and applications involving intermittent motion requiring high spring loads. V-finger seals are designed for dynamic applications, where they provide extremely low friction and compensate for seal wear for long service life. Also providing low friction in dynamic applications, advance pitch wire-wound spring seals allow for extended spring travel to accommodate large changes in seal gland cross-sections, where the motion of sealed joints is most severe. Impervious to overstressing, they also compensate for extensive motion and wear.

All three types of PLASTIFLEX seals are temperature rated from cryogenic to 500°F (260°F). Helical and V-finger seals are pressure rated from vacuum to 25,000 psi (1,700 Bar), and advance pitch wire seals are rated from vacuum to 5,000 psi (350+ Bar). All three can be used for sealing a wide range of media.

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