RT2

John Crane Type2 Replacement

Non-pusher elastomer bellows mechanical seal type 2 is ideal for use in very short stuffing boxs due to a compact working height. RT2U,RT2K conform with US and UK standard respectively. Type 2 mechanical seal is widely used in the pumps, mixers, air compressors, fans and other rotating equipment.

Features

Reliable transmission due to special design in the drive band and drive notches
Special balancing in the elastomer bellows. design,avaliable in high-pressure application
Single seal、balanced、Bi-directional
Good interchange ability,RT2U Dimensional data conform with US standard,RT2K conform with UK standard
Available in metric and inch sizes
RT2 can also be used as double face mechanical seals in two sets arrangement

Recommended Applications

Petroleum chemical industry
Water and waste water technology
Industrial pumps
Process pumps
Other Rotating Equipment

Operating range

Shaft diameter: d1=16…75mm(0.625” …3.000”)
Pressure: p=0…1.7Mpa（246.5psi）
Temperature: t = -40 °C …200 °C(-40°F to 392°F)
Sliding velocity: Vg≤13m/s（42.6ft/m）

Product Structure

Combination Materials

1.Rotary Face

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

2.Stationary Seat

Aluminium oxide(Ceramic) B
Silicon carbide (RBSIC) O
Tungsten carbide W1

3.Auxiliary Seal

Nitrile-Butadiene-Rubber (NBR) P
Fluorocarbon-Rubber (Viton) V
Ethylene-Propylene-Diene (EPDM) E

4.Spring

Stainless Steel (SUS304) F

5.Metal Parts