NBR EPDM CR oil-resistant rubber grommet

An oil-resistant rubber grommet cushions a cable where it crosses a hard opening in an environment that may involve fluid contact. The compound choice is central to that use. NBR, EPDM and CR are named in this listing as material options, and they should be considered individually for the substance, temperature and contact pattern involved.

Identify whether the entry will encounter occasional splashes, residue from handling or prolonged contact. Those are different conditions for the rubber and can also affect the cable jacket. A material that is suitable for one fluid should not be assumed suitable for another simply because both are described as oil.

ETOL can adapt the geometry, hardness, size and color. The mounting section should hold the opening without excessive stretch, and the bore should keep the wire away from the edge while leaving its covering intact. Evaluate the chosen material and cable together rather than assessing the grommet in isolation.

Include cleaning substances in that review. A grommet may encounter one fluid during operation and a different cleaner during service, so both exposures belong in the material selection rather than only the fluid most visible in daily use.

During maintenance, remove deposits using a compatible cleaning method and inspect for swelling, softening or a changed fit. If the rubber has shifted in its groove, investigate the exposure and cable loading before replacing it with an identical part. Avoid concealing a fluid leak behind the flange; the source of the leak needs to be addressed separately.

Material options

Custom EPDM or NBR or neoprene formulation; tailor the geometry and color to the required interface and exposure.

Hardness range

30–90 Shore A for rubber. Assess the grade against this fit requirement: If the rubber has shifted in its groove, investigate the exposure and cable loading before replacing it with an identical part.

Custom profile & fit

The mounting section should hold the opening without excessive stretch, and the bore should keep the wire away from the edge while leaving its covering intact.

Assembly considerations

Remove deposits using a compatible cleaning method and inspect for swelling, softening or a changed fit.

Design check

Evaluate the chosen material and cable together rather than assessing the grommet in isolation.

Photos illustrate structure or material only. The mounting section should hold the opening without excessive stretch, and the bore should keep the wire away from the edge while leaving its covering intact. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.