Longshen Seal Manufacture (W. H) Co., Ltd, is an innovative State-level high-tech enterprise which is affiliated with Huazhong scientific institute of Fluid. It specializes in design, research and development, manufacure, sales and service of various mechanical seal, oil(shaft) seal, industrial rubber and seal material(SIC, CA, hard alloy, alumina. PTFE etc., ). the products are widely used in aerospace, fiber optic, military science, nuclear industry, electrical, steel, petrochemical industry, paper-making, dyeing, vessel, food processing, pharmacy, bio and environmental engineering, water recycling and treatment, reactor vessel(Reducer), general industrial pumps, submersible pumps and marine pumps, gas engine, auto-cooling pumps and auto-compressor, cool-machine. We have senior technicians and advanced equipment. We implement ERP management system and continuously improves quality management system ISO 9001:2008, ISO/TS16949 and environmental system ISO 14001:2004. the manufacturing and testing of our products firmly conform to domestic and foreign advanced standards like ISO-3069, DIN24960, API610, API1682, NF EN12756, ANSI B73.1 & Gb6556. JB/T1472 and JB/T5966.


Main products: mechanical seal for various kinds of pump, vessel, centrifugal compressor, fanblower and other liquid transportation mechanical seals(including dry gas seal, welding metal bellows mechanical seal, magnetic sealing etc. ); Mechanical seal auxiliary system; Rubber seal; Sealing materials(including silicon carbide, tungsten carbide and carbon graphite, 99% ceramics etc); high-tech innovative products: dry gas seal, high speed centrifugal compressor seal, the seal for large size shaft and high pressure reaction and the seal for big size granulated medium and sand mill, the seal for fiber optic drawing and cooling magnetic fluid, etc

Our members adhere to the principle of " People-oriented, Scientific and technological innovation, Continuous Service and Win-Win". Warmly welcome esteemed customers from home and abroad to visit us for strengthening mutual-understanding and establishing a long-term cooperation.