Secondary Containment Bushing | John Crane Mechanical Seals
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Secondary Containment Bushing

Secondary Containment Device for Plan 66A Crude-oil Pipeline Applications

The SCB Secondary Containment Bushing is a standardized, dual-bushing arrangement intended for use in conjunction with API Plan 66A. It is used as the back-up to a primary seal and is usually incorporated into the cartridge. This seal is specifically targeted at crude-oil pipeline pump seals, such as the 8648VRS.

 


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Secondary Containment Bushing 66A
  • Secondary Containment Bushing 66A
  • secondary containment bushing assembly 1812
  • secondary containment bushing assembly 5875

Features

  • California Residents: PROPOSITION 65 WARNING
  • Restricts leakage beyond primary bushing at full pipeline pressure in the event of primary seal failure in both dynamic and static operation to 1500 psi g (103 bar g).
  • Enables upset to be detected, switched off, and pump shaft to coast down without significant release to the environment.
  • Increases seal mean time between repair in the most difficult crude-oil applications, when used with 8648VRS ‘NPSS’ technology.

Parameters

Temperature Limits

-20°F to 400°F/-30°C to 205°C

Pressure Limits

Up to 100 barg/1500psig
Static Pressure up to 152 barg (2200 psig)

Speed Limits

3500fpm/17.8m/s

Recommended Applications

  • Crude oil pipeline pumps
Works with:
Type 8648VRS Type 8648VRS
Similar Products:
Type 28SC Type 28SC

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