silicone rubber parts/Buna-N rubber damper with steel parts

A Buna-N rubber damper with steel parts combines a selected elastomer body with rigid features used by the surrounding assembly. The steel and rubber regions need to be developed together so the fastening load reaches the intended surfaces while the compliant section remains available to work.

Consider the installed alignment before applying the operating load. If the adjoining parts pull the steel features out of position, the rubber may begin service already distorted. The mounting layout should locate the component naturally, with clearance for its expected deformation. The body shape and the exposed steel geometry both influence the space needed around it.

Buna-N selection should account for the actual media and temperatures at the component. Include the metal surfaces when reviewing environmental exposure rather than assuming the rubber alone defines suitability. During inspection, look for movement between the mounted assembly and its connection points, together with damage near the material transitions. A similar outer rubber shape is insufficient for replacement if the steel interface or installed separation differs.

Material options

Custom silicone or rubber formulation, with dimensions and color adapted to the mating component.

Hardness range

Silicone: 20–80 Shore A; rubber: 30–90 Shore A. Assess the grade against this fit requirement: The steel and rubber regions need to be developed together so the fastening load reaches the intended surfaces while the compliant section remains available to work.

Custom profile & fit

The body shape and the exposed steel geometry both influence the space needed around it.

Assembly considerations

Consider the installed alignment before applying the operating load.

Design check

Include the metal surfaces when reviewing environmental exposure rather than assuming the rubber alone defines suitability.

Photos illustrate structure or material only. The steel and rubber regions need to be developed together so the fastening load reaches the intended surfaces while the compliant section remains available to work. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.