4EDCB8T/4EDCB8D Mechanical seal according to API 682

Mechanical seal according to API 682 4EDCB8T/4EDCB8D

Double mechanical seal to API 682, 4th edition, Category 1, for the MegaCPK pump type series. Balanced cartridge seal, Arrangements 2 and 3, dynamic design.

Main Applications

  • Chemical industry
  • Petrochemical industry

Technical Data

Cartridge seal
Yes
Design Mechanical seal
Dynamic
Mechanical seal type
Balanced mechanical seal
Sealing type Mechanical seal
Double
Max allowed fluid temp TSG
200 °C

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Benefits

  • The double cartridge seal is especially designed for use in the standardised seal installation spaces of the non-API pump MegaCPK (CPKN + CPK possible).
  • The double cartridge seal can be connected in accordance with all common API Plans, such as 01, 02, 11, 31, 32 + 52, 53 (A, B).
  • 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.

Technical Data

Max allowable axial movem TSG
1 mm
Min allowable axial movem TSG
-1 mm
Cartridge seal
Yes
Max allow.dynamic pressure TSG
20 bar
Design Mechanical seal
Dynamic
Mechanical seal type
Balanced mechanical seal
Sealing type Mechanical seal
Double
Mtrl metallic compon.mech.seal
1.4571
Mtrl mech.seal spring
2.4610
Mtrl Secondary seal outboard
FKM
Mtrl Secondary seal inboard
FKM,
FFKM
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]
Dir of rotation Mech seal
Bi-directional
Max allow.sliding speed TSG
20 m/s
Spring design Mechanical seal
Multiple springs
Max allow.static pressure TSG
20 bar
Max allowed fluid temp TSG
200 °C
Min allowed fluid temp TSG
-10 °C

Sectional Drawings

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