Description: Installed between pump shaft and pump casing of washing‑tower circulation pumps. It seals process media such as starch slurry and process water to prevent material leakage and air ingress, sustains stable pump internal pressure, preserves pumping efficiency and avoids product waste and site contamination.
Core has. Abrasion-resistant sealing faces: Silicon carbide/hard alloy counterfaces withstand continuous scouring by starch particles and fine fibers to prolong spare-part service life.
Anti-fouling & anti-clogging: Optional face-flush configuration flushes starch deposits and fibrous debris away from sealing interface to stop jamming caused by dried solids.
Food-grade compliance: All wetted components satisfy food-processing hygiene standards. High compensation capacity: Built-in elastic compensation accommodates pump-shaft run-out and deflection and maintains tight face contact to minimize leakage risk.
Service-friendly construction: Standardized footprint fits mainstream centrifugal pumps for fast on-site replacement and less downtime.
Common structure types
1. Single-end mechanical seal: Simple cost-effective for moderately pressurized relatively clean process-water circulation pumps
2. Double-end mechanical seal (with flush): Dual sealing faces together with buffer-liquid & flushing circuit deliver superior sealing reliability.
The preferred choice for circulation pumps handling particle-laden fibrous starch slurry.
Main materials.
Sealing faces: Silicon carbide, hard alloy (high-wear grade).
Secondary seals: Food-grade nitrile rubber, EPDM, fluororubber.
Metallic parts: 304/316L stainless steel.
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