Seat (Valve Seats, Bearing Seats, Spring Seats)

A seat is a precision-engineered surface or component that supports, seals, or positions another part within a mechanical assembly. Typically made from hardened steel, brass, or elastomer, it features a contoured or flat sealing face to mate with a corresponding component such as a valve, bearing, or fastener. Common applications include valve seats, bearing seats, and spring seats. The seat ensures proper alignment, load distribution, and leak-proof closure under pressure or motion. Accurate machining and surface finish are critical for reliable performance in engines, pumps, and hydraulic systems.