Composite components designed to provide both mechanical fastening and sealing functions in bolted assemblies. They are commonly used in automotive, industrial, and fluid systems.
Sealing washers serve a dual purpose: they ensure a reliable mechanical fastening while providing an effective seal against fluids, gases, and environmental contaminants. Their elastomeric layers allow them to adapt to surface irregularities, absorb vibrations, and compensate for thermal expansion and contraction. This makes them essential in assemblies where tightness, durability, and vibration damping are critical, particularly in automotive and industrial fluid systems.
The rubber is mechanically bonded to metal core (not chemically) or produced by vulcanizing rubber directly onto the stamped metal core
DOISTUA is a company founded in 1951, located in Galdakao, near Bilbao, and close to the port, the airport, and the European highway network.