This website uses cookies to ensure users have the best online experience. By continuing to browse this website, you are giving your consent to the use of cookies. To learn more, read our privacy policy. X
< Back to Liquid Hydocarbon Pipeline

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.



Document Finder


  • 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.


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


Recommended Applications

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

Contact Us