• Greater reliability and installation ease assured by rugged components, heavy duty seal faces, and cartridge seal configuration

• Satisfies all API 682 design and qualification test requirements for single and dual arrangement seals

• Optimal face cooling and reduced distortion with available multiport injection

• Increased safety and environmental compliance assured by dual seal arrangement, which provides for safety backup and emissions control in hazardous services

• Longer equipment life and reliability from design that runs cooler and is less sensitive to vapor pressure margin, even under upset conditions

• Combat dirty services with the clog-resistant large, single coil spring in the QBS seal

• Handle low lubricity hot water without the need for auxiliary cooling systems with the QBU seal

• Handle vaporizing hydrocarbons with the QBQ seal

• Handle low vapor pressure margin with the QBQ LZ seal, featuring Precision Face Topography wave pattern on the stationary seal face

• Low to moderate pressurized barrier dual seal applications are handled by the QBB face-to-back configuration

• Moderate and high pressure pressurized dual seal applications, including Piping Plan 53B, are handled by the QB2B back-to-back configuration

• Choice of throttle bushing design: fixed, floating, or segmented

• Chemicals: Basic (Organic & Inorganic)

• Water: Water Management | Desalination

• Oil & Gas: Downstream Processing

• Power: Nuclear | Conventional Steam | Combined Cycle | Biomass & MSW

Product Links

• Mechanical Seal Guidelines for the Corn Processing Industry

• Equipment for Reverse Osmosis Desalination Systems – Brochure

• QBQ LZ Brochure

• QB Series Balanced Pusher Seals – Brochure

• Mechanical Seal Quick Ship Flyer

• Flowserve Seal Product Portfolio

• Seals Designed for All Fluid Management Challenges – Brochure

• Flowserve Etten-Leur Test Center

• Diamond-Coated Seal Faces – Flyer

• QBU Seal Brochure

• QB Seal Installation Instructions