Mechanical Seals
Flowserve Pusher Seals - QB, QBS and QBU

QB Series balanced pusher seals are ideal for medium-duty applications in power and industrial applications.

• Greater reliability and installation ease assured by rugged components, heavy-duty seal faces and cartridge seal configuration
• Combat dirty services with the clog-resistant large cross-section, single coil spring in the QBS seal
• Handle low lubricity hot water without the need for auxiliary cooling systems with the QBU seal
• Choice of throttle bushing design: fixed, floating or segmented for safe equipment operation

FEATURES

• INDUSTRIAL PROCESS : ISC2-PX, ISC2–XP, ISC2-682PX and ISC2-682XP / ISC2-PP and ISC2-682PP / QB, QBS and QBU / UC and UCQ / RO / CRO / Europac Series / RA and RA-C
• API PROCESS : QBQ and QBQ LZ / QBB and QB2B / HSH
• PIPELINE PROCESS : UO and UOP
• HIGH-ENERGY PROCESS : D and DP / UHTW and DHTW