4EDTR6HS/4EDTR6HQ Mechanical seal according to API 682

Mechanical seal according to API 682 4EDTR6HS/4EDTR6HQ

Single metal-bellows mechanical seals to API 682, 4th edition. Balanced cartridge seal, Arrangement 1.

Main Applications

  • API 682 applications in the chemical and petrochemical industries

Technical Data

Cartridge seal
Yes
Design Mechanical seal
Dynamic
Mechanical seal type
Balanced mechanical seal
Sealing type Mechanical seal
Single
Max allowed fluid temp TSG
400 °C

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Benefits

  • The single metal-bellows seal can be connected in accordance with all common API Plans, such as 01, 02, 11, 31, 32 + 61 (62) and 23 + 61 (62). The seals are available for all of KSB's API pumps.
  • The throttling bush enables connection of a gas, steam or liquid quench, depending on the seal variant. This prevents outboard deposits at the seal, for example.
  • The bellows made of Inconel®718 and the secondary sealing elements made of pure graphite have an excellent chemical resistance and are especially suited for high-temperature applications.

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
Single
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 inboard
G [GRAPHITE]
Mtrl Mating ring inboard
Q2 [SIC-C-SI, COMPOSITE]
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
23 m/s
Spring design Mechanical seal
Bellows
Max allow.static pressure TSG
20 bar
Max allowed fluid temp TSG
400 °C
Min allowed fluid temp TSG
-75 °C

Sectional Drawings

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