In severe industrial applications, the structural integrity of the seal is just as critical as its chemical resistance. The outer and inner shells of our TA seals are stamped from high-grade Cold-Rolled Carbon Steel, providing the high compressive yield strength necessary for heavy interference fits. The dynamic sealing element is securely bonded to this metal frame and is typically molded from high-density Nitrile Butadiene Rubber (NBR). This premium NBR formulation effortlessly handles standard industrial gear oils, mineral lubricants, and petroleum-based greases at operating temperatures up to 100°C. For extreme thermal environments, the lip material can be upgraded to FKM (Fluoroelastomer).

From a maintenance engineering perspective, installing a double-shell metal seal requires stricter protocols than a rubber-coated seal. Because metal-to-metal interfaces cannot inherently compensate for deep scratches in the housing bore, the receiving bore must be machined cleanly and free of severe gouges. Crucially, a liquid bore sealant (such as a non-hardening Permatex or Loctite compound) must be applied to the outer metal shell prior to installation. This prevents static oil weepage around the outside of the seal. Furthermore, technicians must use a proper installation mandrel—striking the seal directly with a hammer will crush the dual shells, permanently distorting the dynamic lip geometry and causing immediate failure.