Seal cơ khí

QUOTE

  • Mô tả

Mô tả

Features

  • API 682 Category 2 and 3, Type C, Arrangement 2 and 3 seal
  • Dual seal in face-to-back arrangement
  • Balanced
  • Cartridge unit
  • Stationary metal bellows
  • Shrink fitted seal rings and solid mating rings

Advantages

  • Suitable for higher speeds
  • Good followability due to no influence from run-out, squareness or vibration of the shaft
  • Compact design
  • Low heat generation and power consumption due to narrow seal face width
  • Longer seal life
  • Also available in double-ply design
  • Suited for applications with extreme high and low temperatures
  • Absence of dynamic O-Ring eliminates/reduces seal face hang-up
  • Bellows design minimizes variation in face load due to shaft expansion or face wear
  • Resistant to abrasive particles in the medium, no shaft or sleeve fretting

Operating range

  • Shaft diameter: d1 = 20 … 110 mm (0.79″ … 4.33″)
  • Pressure single ply bellows: p = vacuum … 20 bar (… 290 PSI)
  • Pressure double ply bellows: p = vacuum … 35 bar (… 508 PSI)
  • Temperature: t = -130 ºC … +400 ºC (-202 ºF … +752 ºF)
  • Sliding velocity: vg … 50 m/s (… 164 ft/s)

Materials

  • Seal rings: Blister resistant carbon,
  • Silicon carbide SSiC (Q1), RBSiC (Q2)
  • Mating rings: Silicon carbide SSiC (Q1), RBSiC (Q2)
  • Bellows: Inconel® 718 (M6)
  • Secondary seals: Graphite (G)
  • Metal parts: CrNiMo steel 316 (G),
  • Carpenter® 42 (T4)

Standards and approvals

  • API 682 / ISO 21049
  • API 682 4th ed. Cat. 2/3 – 2CW-CW
  • API 682 4th ed. Cat. 2/3 – 3CW-FB