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TG8U-TG9U

John Crane Type8-1/Type 109 Replacement

TG8U Auxiliary seal is rubber 0-ring structure TG9U Auxiliary seal is PTFE wedge ring structure

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Detail Information

Features

Multiple Spring Design

Unbalanced Seal

Bi-directional

Equivalent to Type8-1

Type109

Recommended Applications

Chemical industry

Industry pumps

Process Pumps

Oil refining and petrochemical industry

Other Rotating Equipment

Operating range

Shaft diameter: d1=18...100mm(0.750'' ...4.000'')

Pressure: p=0...2.4Mpa(348psi)

Temperature: t = -40 °C ...200 °C(-40°F to 392°F)(TG8U)

t = -29°C ...260 °C(-20.2°F to 500°F)(TG9U)

Sliding velocity: Vg≤25m/s（82ft/s）(5000fpm)

Notes: The range of preesure,temperature and sliding velocity is depend on seals combination materials

Product Structure

Combination Materials

1. Rotary Face

Carbon graphite, resin impreg A_K

Reaction Bonded Sic RBSiC O

Sintered Silicon Carbide SSlC O₁

Tungsten Carbide.Ni-binder W

2. Stationary Seat

Elastomers 0-ring(TG8U)

Fluorocarbon Rubber FKM V

Etylene Propylene Rubber EPDM E

Perfluorocarbon Rubber FFKM K

PTFE wedge ring (TG9U)

Pure PTFE T

3. Auxiliary Seal

Fluorocarbon-Rubber (Viton) V

Ethylene-Propylene-Diene (EPDM) E

PTFE Enwrap Viton M1

4. Spring

GrNiMo-Steel (AlSl316) G

HastelloyC-4 M

5. Metal Parts

GrNi-Steel (AlS1304) F

GrNiMo-Steel (AlSl316) G

Mechanical Seals

Pump Seals

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