Sealing Pump Housings for Efficiency and Durability

  • Post last modified:October 9, 2025

Pump housings (centrifugal, piston, gear, or diaphragm pumps) require an exceptionally reliable flange seal to maintain system pressure/vacuum and contain the pumped fluid (water, chemicals, oil, etc.). These flanges are subjected to continuous high pressure, intense vibration from rotating elements, and varying operational temperatures. Furthermore, pump maintenance often requires a sealant that works effectively on aluminum or cast iron casings.

Don’t compromise pump efficiency with a gasket that will eventually creep or fail.

INCURE HeatGrip™ 504 Flexible General Purpose Gasket Sealant

The INCURE HeatGrip™ 504 is the versatile, heavy-duty solution for sealing the vast majority of Pump Housings. Its flexibility, combined with superior gap-filling capability, makes it ideal for the imperfect, often stressed surfaces found in pump casings.

Feature & BenefitTechnical Insight for Pump FlangesConversion Value
Vibration DampingThe flexible nature of the HeatGrip™ 504 compound absorbs pump vibration and mechanical shock, preventing the seal from cracking or fatiguing, thereby extending the pump’s operational lifespan.Silence the Stress: 
Lock down your seal and protect your pump internals from dynamic failure.
Superior Gap FillingDesigned to seal large imperfections (up to 0.5 mm), ensuring an absolute, leak-proof barrier on cast iron, steel, or aluminum pump housing surfaces.Seal Every Imperfection: Ensure a perfect, monolithic barrier, even on older, machined casings.
Fluid ContainmentCures into a tough polymer that is highly resistant to water, coolants, lubricating oils, and many common industrial chemicals, guaranteeing long-term fluid retention.Maintain Integrity: 
Guarantee your valuable fluids stay where they belong—inside the pump.
Gasket EliminationEliminates the risk of “gasket creep” and bolt loosening. It allows for metal-to-metal contact where required, maintaining precise alignment of internal components (shafts, impellers).Optimize Alignment: 
Achieve better rotational accuracy for longer bearing and seal life.

Application Steps: Sealing Pump Housings for Reliability

  1. Preparation (Crucial): Clean both flange surfaces meticulously. Remove all fluid, old sealant, and residue. Use an industrial-grade cleaner (like acetone) and ensure the metal is perfectly dry.
  2. Application: Apply a continuous bead of HeatGrip™ 504 onto one flange face, circling all bolt holes. Use a spatula to spread the material into a uniform, thin film across the entire mating surface.
  3. Assembly: Immediately mate the housing sections (within 5 minutes) and torque the bolts to the manufacturer’s specification.
  4. Curing: Allow a full 24 hours for the sealant to achieve maximum resistance before filling the pump or placing the system under pressure.