Standard homogeneous elastomers often suffer from rapid degradation, swelling, or “cold flow” when exposed to industrial coolants and high-pressure water jets. Our fabric-reinforced U-Type seals are available in both high-density NBR (Nitrile) for standard aqueous environments and premium FKM (Fluoroelastomer) for extreme thermal applications. The FKM variant maintains lip elasticity in aggressive media up to 200°C, resisting the localized cavitation and chemical attack that destroy lesser seals. In both material options, the embedded fabric mesh drastically enhances the polymer’s tear strength and dimensional stability across millions of rotational cycles.

From an operational standpoint, the 12*22*5.5 U-Type seal is designed to maximize your pump’s mean time between failures (MTBF). The rigid fabric outer diameter ensures a highly stable interference fit within the pump gland, securely anchoring the seal without the need for supplementary chemical retaining compounds. To guarantee a low-friction lifespan, technicians must ensure the shaft is polished to a surface finish of 0.2 to 0.4 μm Ra. Furthermore, applying a light coat of compatible assembly grease to the dynamic lip prior to installation is critical to prevent “dry-run” galling during the pump’s initial startup phase.