... as the static sealing element of pipe, valve, pump, thermal exchange, condensing tower, plain hole and man hole of flange, etc ... as the static sealing element of pipe, valve, pump, thermal exchange, condensing tower, plain hole and man hole of flange, etc ... with inner &outer rings 3050IC304 304/FG CS SWG for heat exchange 3050HHeat exchanger 304/FG with 1 bar of DJ Special ...