This article introduces mainly how to design sealing construction and how to choose to use sealing gasket,as the design high temperature is 250 ℃,and the design high pressure is 32 MPa,and the operation medium of the equipment is a deadly poison air,which is very important to seal the deadly poison air equipment completely.

In this paper,the resistant to high-temperatur e compounded rubber stoc k made from ethylene-propylenediene terpolymer(EPDM)were studied and it can b e used for seal tape of car's water box.