1650
Double-shell jacketed flat gasket of mill-board sheet soft filler and thin metal plate covering, whose surface has been treated with flexible graphite.
Because it tightly fits flange surfaces and ensures high airtightness, this gasket can considerably improve sealability, which is a disadvantage of conventional metal jacked gasket.
Sealability is particularly good at low tightening pressure.
Various metals, mill-board, and flexible graphite
Gaskets/Semi-metallic gaskets