Features Secondary Containment Bushing
- 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.
Recommended Applications
- Crude oil pipeline pumps
About Secondary Containment Bushing
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.
Design Features Secondary Containment Bushing
- Restricts leakage past primary bushing at full pipeline pressure in the event of primary seal failure in both dynamic and static operation to 1500 psig/103 barg
- Enables upset detection, pump switch off and cost down without significant release to environment
- Can be used with 8648VRS ‘NPSS’ technology to increase seal MTBR reliability even in the most difficult crude oil applications
Material Secondary Containment Bushing
- O-ring (adaptive hardware) : Fluoroelastomer: temperature limit: -20°F to 401°F/-29°C to 205°C
- Bushing: Carbon
- Assembly/Adaptor/Auxiliary gland: 316 Stainless steel
- Sleeve hard coating: Tungsten carbide
Operating range Secondary Containment Bushing
Temperature Limits
-20°F to 400°F/-30°C to 205°CPressure Limits
Up to 100 barg/1500psig
Static Pressure up to 152 barg (2200 psig)Speed Limits
3500fpm/17.8m/s
Product Description
The secondary containment bushing (SCB) is standardized dual bushing arrangement intended for use in conjunction with the 66A piping plan.
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 pumps. The dual bushing arrangement consists of primary and secondary bushings in a cartridge, complete with a port for measuring pressure upstream of the primary bushing, and a port for drainage between the bushings.
Material Secondary Containment Bushing
- O-ring (adaptive hardware) : Fluoroelastomer: temperature limit: -20°F to 401°F/-29°C to 205°C
- Bushing: Carbon
- Assembly/Adaptor/Auxiliary gland: 316 Stainless steel
- Sleeve hard coating: Tungsten Secondary Containment Bushingcarbide