4EDTR6HT/4EDTR6HD Mechanical seal according to API 682

Mechanical seal according to API 682 4EDTR6HT/4EDTR6HD

Double metal-bellows mechanical seal to API 682, 4th edition. Balanced cartridge seal, Arrangements 2 and 3.

Main Applications

  • API 682 applications in the chemical and petrochemical industries

Technical Data

Cartridge seal
Yes
Design
Dynamic
Balancing
Balanced mechanical seal
Sealing type
Double
Maximum allowable fluid temperature
400 °C

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Benefits

  • The double metal-bellows seal can be connected in accordance with all common API Plans,such as: 01, 02, 11, 31, 32 + 52, 53 (A, B, C) and 23 + 52, 53 (A, B, C). The seals are available for all of KSB's API pumps.
  • The space between the two mechanical seals is flushed with a buffer or barrier fluid, depending on the application. This completely absorbs any leakage of the fluid pumped. In addition, the heat is transported away from this area.
  • The double pressure balanced mechanical seal can be operated with pressurised barrier fluid or unpressurised buffer fluid.

Technical Data

Maximum allowable axial movement
1 mm
Minimum allowable axial movement
-1 mm
Cartridge seal
Yes
Maximum allowable dynamic pressure
20 bar
Design
Dynamic
Balancing
Balanced mechanical seal
Sealing type
Double
Mtrl Mech seal bellows
M6 [INCONEL 718 (2.4668)]
Mtrl metallic compon.mech.seal
T4 [CARPENTER 42 (1.3917)/CRNIMO-STEEL(1.4571)]
Mtrl Secondary seal outboard
G [GRAPHITE]
Mtrl Secondary seal inboard
G [GRAPHITE]
Mtrl Mating ring outboard
Q2 [SIC-C-SI, COMPOSITE]
Mtrl Mating ring inboard
Q2 [SIC-C-SI, COMPOSITE]
Mtrl Primary ring outboard
A [CARBON, METAL-IMPREGNATED]
Mtrl Primary ring inboard
A [CARBON, METAL-IMPREGNATED],
Q2 [SIC-C-SI, COMPOSITE]
Direction of rotation
Bi-directional
Maximum allowable sliding velocity
23 m/s
Spring design
Bellows
Maximum allowable static pressure
20 bar
Maximum allowable fluid temperature
400 °C
Minimum allowable fluid temperature
-75 °C

Sectional Drawings

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