... as sealing material for film-coating machine,sinter furnace, brazier, vacuum pump sealing power drive. Nut- ... vacuum equipments, like, vacuum furnace, sinter furnace, brazier, hardening furnace, heat-treating furnace, monocrystalline silicon furnace, vacuum pump, film-coating machine ... equipment requirements. Nut-pattern solid diffusion furnace seals,rotary feedthrough,mechanical transmission seal