In high-temperature industrial pumps, standard Nitrile (NBR) or EPDM gaskets quickly harden, crack, or suffer from hydrolysis. Our sealing rings are molded from premium Fluoroelastomer (FKM/Viton). This highly cross-linked polymer matrix not only withstands continuous exposure to extreme heat but also aggressively resists the chemical attack of synthetic lubricants and heavy-duty descaling chemicals. By resisting “compression set” (the permanent flattening of the sealing lip), the FKM material prevents the localized cavitation damage that often destroys lesser rubber seals in high-RPM impellers, maximizing the pump’s overall lifecycle.

From a maintenance engineering standpoint, meticulous installation is critical to maximizing the lifespan of this 22*32*5.5mm kit. The mating shaft must be polished to a surface finish of 0.2 to 0.4 μm Ra; any microscopic grooving or oxidation will act as a file and rapidly shred the FKM lip. When pressing the seal into the 32mm housing, use a proper installation mandrel to ensure it seats squarely, preventing angular misalignment. Crucially, the dynamic sealing lip must be pre-lubricated with a compatible high-temperature assembly grease prior to pump priming. This prevents catastrophic “dry-running” friction during the critical initial startup phase before the system fluid reaches the seal.