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Lockdown Screw Seals, also called lockdown screw packing is made from elastomer and two SS metal end caps. It provides a dependable seal in multiple pressure ranges and service environments. JST has conducted the PR2 test to qualify the existing elastomer/metal lockdown screw packing to 20,000 psi at a temperature range of -50 to 350ºF. This test consisted of a 20,000 psi nitrogen gas proof test a...
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