20mm OD Silicone Rubber Flexible Bellow

The Silicone Rubber Flexible Bellow shown here has a nominal 20 mm outside diameter. Its compact corrugated form can be customized in size, structure, hardness and color for a particular assembly. The small diameter is a useful reference, but it does not describe the end bore or the amount of movement available.

Space around the folds should be evaluated as the part changes shape. A bellows that clears adjacent components when extended may spread or bow toward them when compressed. Include nearby screw heads and edges in that check, since a small protrusion can become a rubbing point during repeated movement.

Select the connection dimensions separately from the folded body. Each end should locate on its mating feature without requiring the corrugations to stretch continuously just to reach the installed position. Custom material choices can be considered when the environment requires something other than the featured silicone construction.

Handle the end sections when fitting or removing the part. Pulling a tight connection by the middle folds concentrates force in the flexible wall. After assembly, move the mechanism gradually and inspect for contact marks before allowing normal operation.

Material options

Custom silicone compound; formulation and geometry developed together.

Hardness selection

Silicone options: 20–80 Shore A. Pulling a tight connection by the middle folds concentrates force in the flexible wall.

Custom geometry

Select the connection dimensions separately from the folded body.

Fit evaluation

After assembly, move the mechanism gradually and inspect for contact marks before allowing normal operation.

Color & OEM

Custom colors; identification clear of folds and end connections.

Photos illustrate structure or material appearance only. The small diameter is a useful reference, but it does not describe the end bore or the amount of movement available. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.