Custom made sponge NBR rubber handle for gym equipment

An NBR rubber handle with a sponge construction provides a compliant hand-contact surface for a matching gym-equipment handle. Custom dimensions and colors allow the grip to follow the supporting member and the surrounding equipment design. Its installed feel depends on the sponge section as well as the core beneath it.

Compare the grip while it is fitted, particularly where the fingers apply repeated pressure. A sleeve that feels soft when loose can become noticeably firmer over a large core, while an oversized cavity may let it roll under the hand. Choose the internal shape and wall thickness together rather than selecting softness in isolation.

Check that the ends remain clear of moving joints and attachment hardware. The grip should stay in its intended position throughout the exercise movement without bunching along the core. Select the compound and surface for the equipment's cleaning routine. During maintenance, inspect for persistent flattening, torn ends or a change in retention. Correct a loose fit instead of hiding it beneath tape, which changes the hand-contact surface and can conceal further wear.

Material options

Custom NBR sponge construction, with bore, outer section and color matched to the gym-equipment handle.

Hardness selection

20–30 Shore C is a soft gym-grip reference; compare finger pressure on the selected NBR sponge wall and actual core.

Custom profile & fit

Choose the internal shape and wall thickness together rather than selecting softness in isolation.

Assembly considerations

Compare the grip while it is fitted, particularly where the fingers apply repeated pressure.

Design check

Check that the ends remain clear of moving joints and attachment hardware.

Photos illustrate structure or material only. The installed feel depends on the sponge section as well as the core beneath it. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.