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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
Dynamic
Balancing
Balanced mechanical seal
Sealing type
Double
Maximum allowable fluid temperature
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

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 metallic compon.mech.seal
X6CRNIMOTI17-12-2
Mtrl mech.seal spring
NIMO16CR16TI
Mtrl Secondary seal outboard
FLUORINATED RUBBER
Mtrl Secondary seal inboard
FLUORINATED RUBBER,
PERFLUORO-RUBBER
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
20 m/s
Spring design
Multiple springs
Maximum allowable static pressure
20 bar
Maximum allowable fluid temperature
200 °C
Minimum allowable fluid temperature
-10 °C

Sectional Drawings

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