Moulded silicone bellows rubber compressible bellows

Moulded silicone bellows use a formed corrugated wall to accommodate movement within a compact protective shape. The fold geometry is part of the design, so the number and depth of folds should be chosen around the intended motion rather than judged only by the overall length of a loose part.

ETOL can customize dimensions, structure, hardness and color, with material alternatives available for different conditions. Identify the installed resting position and the two ends of the operating travel. The bellows should have room to change shape across that range without becoming the mechanical stop.

End connections also influence the fold behavior. If one end sits at an angle, the folds on one side may close earlier than those on the other. Align the attachments before evaluating compression, and leave surrounding clearance for any sideways change in the body.

During the first movement check, observe each section of the bellows instead of looking only at the total length. A single fold that inverts or rubs can concentrate wear. Remove trapped particles from the valleys and avoid using sharp tools to pry adjacent folds apart during cleaning or inspection.

Material options

Custom silicone compound; formulation and geometry developed together.

Hardness selection

Silicone options: 20–80 Shore A. The fold geometry is part of the design, so the number and depth of folds should be chosen around the intended motion rather than judged only by the overall length of a loose part.

Custom geometry

ETOL can customize dimensions, structure, hardness and color, with material alternatives available for different conditions.

Fit evaluation

During the first movement check, observe each section of the bellows instead of looking only at the total length.

Color & OEM

Custom colors; identification clear of folds and end connections.

Photos illustrate structure or material appearance only. Moulded silicone bellows use a formed corrugated wall to accommodate movement within a compact protective shape. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.