Controlled Gap Seals

LABYRINTH SEALS FOR ROTATING SHAFTS

TYPE 905 LABYRINTH (CONTROLLED GAP SEAL)

Type 905 labyrinth seals are durable bushing type seals designed to minimize leakage of gases by using a closely controlled clearance between the floating labyrinth ring and a rotating shaft. The labyrinth seals temperature ranges are exceptionally wide since no elastomers are used. Their design also features a unique stabilizer ring with fins which minimize stress on the carbon ring, thereby maintaining roundness of the labyrinth ring assembly. Dimensional tolerance of the critical inside diameter of the bushing ring is tightly controlled to minimize leakage variations. 

Type 905 labyrinth seals have a compact construction which simplifies installation in those applications where space is limited. These seals are completely factory assembled for fast, easy installation. Replacement components are also available from inventory. Available with a removable snap ring, the labyrinth ring assemblies are easily disassembled and repaired on site. Full functional static vacuum tests are performed on the labyrinth ring face. Optional functional static flow rate tests are also available.

Operating Conditions
   PRESSURES: UP TO 2,000 P.S.I.
   TEMPERATURES: -400°F TO 1600°F
   SPEEDS: UP TO 40,000 FPM

Features

  Compact Construction
  Controlled Tolerance
  Unique Stabilized Ring with Fins
  Field Repairable
  Long Seal Life
  Optional Silicon Carbide Rings
  Factory Assembled & Tested
  Easy Installation

Equipment Used In

  Gas Turbines
  Interstage Compressors
  Refrigeration Compressors
  Jet Engines
  Super Chargers
  Missiles

Industries Served

  Compressors
  Nuclear
  Aerospace