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I Test Purpose To verify the pressure cycling performance of the gate valve stem packing seals at 15000PSI, -50~350℉. II Product and fixture 1. Product structure The seals include 1 of A ring, 1 of spring, 1 of U ring, 1 of B ring, and 1 of C ring, see fig. 1: 2. Material : 1-PTFE+13% Carbon fiber+2%Graphite (PC007) 2-PTFE+13% Carbon fiber+2%Graphite (PC007) 3-Elgiloy Golden 4-PTFE+13% Carbon fibe...
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