Key Specifications / Parameters Parameter Description Product Type Packing Repair Kit Part Number RPACKX00012 Stem Size 3/8 inch (0.375 inch) Packing Type Single PTFE (TFE) V-ring packing Material Polytetrafluoroethylene (PTFE) Application Valve stem sealing for sliding-stem control valves Temperature Range Suitable for moderate-temperature and chemical service environments Chemical Resistance Excellent resistance to most process fluids Maintenance Simple replacement and installation in field conditions Kit Components PTFE V-ring packing, washers, packing box ring, follower, and wiper components