HBW type buffer seal is a specialized hydraulic buffer ring designed to absorb pressure spikes and reduce shock loads inside hydraulic cylinders. Different from ordinary rod seals, the HBW buffer seal takes the first hit of sudden pressure surges, relieving peak pressure before the fluid reaches the main piston rod seal, so as to protect the main sealing assembly and extend its service life.
Made of high-quality polyurethane material, HBW buffer seal features good compression resistance, outstanding wear resistance and stable mechanical properties. Its special profile can smoothly release transient high pressure without extrusion damage under cyclic shock conditions. It can work reliably at peak pressure up to 40 MPa, with operating temperature ranging from -30℃ to 100℃.
Compatible with mineral hydraulic oil and most conventional hydraulic fluids, HBW hydraulic buffer seals are widely used in excavators, loaders, injection molding machines and other heavy hydraulic equipment. It matches standard groove dimensions for convenient installation and direct replacement. By mitigating pressure impact and protecting primary seals, the HBW buffer seal provides an effective pressure buffering solution for reciprocating hydraulic systems.
Original text from: Hydraulic and Pneumatic Seals https://www.bszzseal.com/
