Solutions for Your Water TREATMENT PLANT equipment
Contact Us
UK-Made Mechanical Seals for Your Equipment
Reliable seals, designed, built and repaired in the UK to keep your pumps, mixers and rotating equipment running smoothly.
Sectors we support
Seal Solutions for all Wastewater AND Freshwater PUMP Brands
Built for harsh, unpredictable environments
Wastewater and freshwater treatment systems run in demanding conditions that quickly expose weak components.
On the wastewater side, pumps and mixers handle high solids, ragging, corrosive media and heavy-duty cycles. On the freshwater side, equipment often runs continuously with tight performance tolerances, chemical dosing and strict reliability requirements.
When a seal fails, you’re left with leakage, contamination risks and unplanned downtime. RB Mechanical Seals provides engineered sealing solutions that stand up to the demands of municipal and industrial wastewater and clean-water treatment plants.
Seals for wastewater and freshwater pump brands
We supply replacements, upgrades and custom-built seals for the full range of water treatment pumps. Whether you’re running Hidrostal, Flygt, Grundfos, KSB, ABS, Borger or other treatment plant equipment, we can support it.
If you don’t know the make, or the pump is older, damaged or obscure, we can work from samples or worn parts to produce a reliable seal that restores performance.
Our seals are designed to handle:
High solids content
Corrosive and chemically aggressive media
Continuous duty cycles
Ragging and fibrous debris
Heavy vibration and misalignment
Chemical dosing environments
Clean-water, low-solids, high-efficiency systems
Refurbishment Service
Pump refurbishment
A pump in wastewater or freshwater treatment does not just wear its seal. Bearings, shafts, wear plates and impellers all degrade over time. Even clean-water pumps lose efficiency through wear, corrosion and misalignment.
Our refurbishment service tackles the entire unit:
Complete strip-down and condition assessment
Replacement or repair of worn components
Lapping of faces and restoration of sealing surfaces
Rebuild to tight tolerances
Testing to confirm performance before return
This approach extends pump life, restores hydraulic efficiency and reduces the frequency of emergency call-outs across both wastewater and freshwater systems.
ATEX-Rated Sealing solutions
Where equipment forms part of a biogas plant or operates near combustible gases or dust, we supply seals to ATEX Category 2 for Zone 1 and Zone 21.
Contact UsWhy treatment plants choose us
Water treatment plants rely on stable, predictable performance. A failed pump affects upstream and downstream systems, increases labour demand and can trigger compliance issues.
We focus on reliability, not shortcuts. Whether the duty involves abrasive sewage or continuous clean-water circulation, our engineering background means every seal and every rebuild is done to last, not just to get the pump back out the door.
Talk to us
If you’re dealing with recurring failures, underperforming pumps or hard-to-find seals in your wastewater or freshwater treatment plant, get in touch. Tell us what equipment you’re running and we’ll advise the most dependable sealing and refurbishment route.
