• Tel:
  • Fax:
  • Email:
    [email protected]
  • Add:
    No 65,dahetou road,haishu area,Ningbo,zhejiang,china
Company Profile

Ningbo TOPSUN Machinery Co., Limited. was founded in Ningbo. Our aim is to deliver the best products, the best service and the best value in the industry. Now most of products are exported to U.S.A, Europe, the Middle East, Southeast Asia and Australia.

Our Products and Services

  • Mechanical seals:
  • Welded metal bellow mechanical seals
  • O ring mechanical seals
  • PTFE wedge mechanical seals
  • Elastomer bellow shaft seals
  • Double mechanical seals
  • Teflon bellow mechanical seals
  • Automotive pump seals
  • Seal faces:
  • Ceramic Seal Faces (99% and 99.50%)
  • Silicon Carbide Seal Faces (Reaction Bonded SiC and Pressureless Sintered SiC)
  • Tungsten Carbide Seal Faces
  • Carbon Graphite Seal Faces (Hot molded Carbon, Sintered Carbon, Impregnated Epoxy Resin(H), Impregnated Furan Resin(K), Impregnated Phenol Aldehyde Resin(F), and Antimony Carbon(D))


We hopes that clients will come to establish long-term business relations with each other on the basis of mutual benefits and development to create a bright perspective


TOPSUN products can replace the mechanical seals produced by John Crane, Burgmann, AESSEAL, Vulcan, chesterton etc