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Design with sleeve on a shaft enables seal applications with higher P-v values. BT-TNG type can be used in all standard applications and it is reccommended for fluids containing solid particles and/or higghly viscous liquids. This seal type is first choice for sealing LPG. Combination of seal face materials is designed for working condition and pumping media. Secondary sealing by O-ring. Other construction parts are made of stainless steel.

Working conditions

Face material

  • carbon-graphite
  • Cr-steel
  • Cr-Ni steel
  • tungsten carbide
  • silicon carbide
  • alumina

Operating limits:

  • p= 25 bar
  • t= -20 to 180 °C
  • v = 15 m/s