Custom rubber cable grommets protect larger cables and cable bundles where they pass through sheet-metal panels, equipment housings, covers, and enclosure openings. They help isolate the cable from sharp edges, hold the entry point in position, and can provide light dust or splash protection when the groove and cable fit are designed accordingly. For quoting, send the cable or bundle diameter, panel-hole size, panel thickness, groove dimensions, required flange size, material preference, and any pull-through or strain-relief requirement. For a single small conductor or compact wire pass-through, see our rubber wire grommets.
These grommets are made for larger cables and cable bundles passing through sheet-metal panels, equipment housings, covers, and enclosure walls. The cable opening, panel groove, flange, hardness, and retention fit can be matched to the actual installation.
The center opening is sized around the actual cable OD or bundle envelope so the grommet fits without over-compressing the cable jacket.
The molded rubber body keeps the cable jacket away from cut or stamped panel edges during installation, vibration, and normal equipment use.
Groove width and depth are matched to the panel thickness and opening geometry so the grommet stays seated in the panel.
Where the cable can move or be pulled, the center profile, wall thickness, flange geometry, and hardness can be adjusted for better retention.
A close cable fit can help limit dust, dirt, and light splash at the entry point. Defined waterproof sealing should use a dedicated waterproof grommet design.
Cable OD, panel hole, panel thickness, groove width, groove depth, flange size, bend clearance, and pull requirements can be built into the part specification.
For quoting or tooling review, send the cable or bundle size together with the panel opening and groove dimensions. These measurements control installation force, panel retention, cable clearance, and available bend space.
| Cable-Entry Design Inputs | |
|---|---|
| Cable / Bundle OD | Actual cable OD or maximum bundle envelope |
| Panel Opening | Hole diameter or cutout dimensions |
| Panel Thickness | Thickness of sheet metal, plastic housing, or enclosure wall |
| Groove Width | Match to the panel thickness and installation fit |
| Groove Depth | Depth required to retain the grommet in the opening |
| Flange Dimensions | Outside diameter and thickness on each side of the panel |
| Rubber Hardness–90 Shore A, selected for fit, flexibility, and cable grip | |
| Cable Direction | Straight exit, angled routing, or nearby bend |
| Bend Clearance | Available space between the panel and first cable bend |
| Pull / Retention Requirement | Expected cable pull, movement, or retention load |
| Material Options | EPDM, NBR, Silicone, HNBR, Neoprene, FKM |
| Operating Environment | Oil, heat, outdoor exposure, chemicals, dust, or moisture |
| Sample Lead Time | About 8 Days |
| Mass Production Lead Time–18 Days |
In-house tooling supports non-standard cable openings, grooves, and flange profiles. Fit samples can be checked in the actual panel before batch production.
Typical Sample Lead Time
CNC Tooling Operation
This page covers ordinary equipment-panel entries for larger cables and cable bundles. The examples below focus on panel protection, cable retention, and available routing space rather than small single-wire or dedicated waterproof designs.
Used where a larger cable or compact bundle passes through a stamped or fabricated panel and needs protection from the cut edge.
Suitable for power, control, and communication cables entering sheet-metal cabinets, control panels, and electrical enclosures.
Used at instrument and equipment-box openings where the cable needs a controlled fit and the available panel space is limited.
Used around power cords or larger internal cable groups passing through molded or sheet-metal appliance housings.
For equipment exposed to cleaning or occasional splash, the cable and groove fit can be designed to reduce open gaps around the entry point.
Used on machinery, guards, covers, and outdoor housings where cable abrasion, vibration, dust, and weather exposure are part of the design review.
Send the cable or bundle OD, panel opening, panel thickness, groove dimensions, flange space, material, and any pull requirement. For a single small wire, see rubber wire grommets; for defined water ingress, use waterproof cable-entry grommets; for vehicle body and harness routing, see automotive wire-harness grommets.
We check the relationship between cable OD, panel opening, panel thickness, groove size, flange geometry, and available routing space before tooling.
Compound and hardness are selected around installation force, cable movement, abrasion, temperature, oil contact, weather exposure, and the required cable grip.
Initial molded samples can be checked in the actual panel opening for groove engagement, cable clearance, installation force, and nearby bend space.
Where retention matters, the assembled part can be checked against the project pull or movement requirement. Batch inspection can follow the drawing and agreed AQL or C=0 criteria.
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