Trisun Mechanical Seal Manufacture Co(S. H. ) Ltd. is the advanced designer & manufacturer of mechanical seal, the ranges involve in: Industrial pump mechanical seal, mixer and agitator seal, cartridge seal, metal bellows seal, auto cooling pump seal and auto air-condition compressor lip seal. Trisun products can replace the mechanical seals produced by John Crane and Burgmann and be widely used in petroleum, chemistry, refinery, paper making, pharmacy, power and auto industry.