Project Description

RT59U

John Crane Type59U Replacement

PTFE wedge,Mutil-Spring construction mechanical seals Type RT59U can be adapted wide range of liquids and operating conditions due to extend material options. Type RT59U is suitable for use with corrosive fluid media, such as typically corrosives, and chemicals.

Features

  • Mutil-Spring, Unbalanced, PTFE wedge construction.

  • Rotary seat with a snap ring holds all parts together in a unitised design which eases installation and removal

  • Torque transmission by set screws

  • Conform with  DIN24960 standard

Recommended Applications

  • Chemical industry

  • Industrial pumps

  • Process pumps

  • Oil refining and petrochemical    industry 

  • Other Rotating Equipment

Operating range

  • Shaft diameter: d1=18…100 mm 

  • Pressure: p=0…1.7Mpa（246.5psi）

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

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

Product Structure

Combination Materials

1.Rotary Face

Silicon carbide (RBSIC) O
Tungsten carbide W1
Carbon graphite resin impregnated Ak

2.Stationary Seat

99% Aluminium Oxide B1
Silicon carbide (RBSIC) O

Tungsten carbide W1

3.Auxiliary Seal

Pure PTFE(PTFE) T

4.Spring

Stainless Steel (SUS304) F
Stainless Steel （SUS316) G

5.Metal Parts

Stainless Steel (SUS304) F
Stainless Steel （SUS316) G

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