Type 2874 Non-Contacting Seals | John Crane Mechanical Seals
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Type 2874

Non-contacting Dual Gas Seal Cartridge for Pumps

The Type 2874 is an internally pressurized, gas-lubricated, non-contacting dual cartridge seal designed for use in API, ANSI and DIN large-bore seal chambers.


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Features

  • California Residents: PROPOSITION 65 WARNING
  • ID to OD pumping spiral groove arrangement places process fluid at the OD of the inboard seal.
  • Eliminates low flow regions in close proximity to inboard seal
  • Reduces dewatering and hang-up
  • Rotating mating ring imparts centrifugal flow to fluid in the seal chamber, which keeps fluid moving and helps prevent solids from falling out of solution.

Parameters

Temperature Limits

-30°F to 500°F/-34°C to 260°C
Pressure Limits

Vacuum to 600 psi(g)/(41 bar(g)

Maximum differential pressure (process/inbd) is 150 psi(g)
Speed Limits

1450 to 3600 rpm

Consult engineering for low- or high-speed designs.
Other

1.375 to 4.000"

Consult engineering for non-standard sizes.

Recommended Applications

  • Process pumps
  • Other rotating equipment
Works With
Smartflow Smartflow
Smartflow IG Smartflow IG
Safeunit™ Safeunit™
Safeunit™ Ultima Safeunit™ Ultima
Safeclean Safeclean
GR1/1C GR1/1C

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