Rectangular rubber grommets are molded to fit square and rectangular panel openings where a standard round grommet will not work. Specify the cutout length and width, corner radius, panel thickness, groove dimensions, and the size of the cable or component passing through the opening.
Round grommets do not seat correctly in square or rectangular cutouts. The molded profile must match the opening length and width, corner radius, panel thickness, and groove so the part sits securely around the panel edge.
Molded to the finished length and width of a rectangular or square panel opening rather than a standard round hole.
The molded corner radius must follow the cutout radius so the grommet seats evenly without lifting or bunching at the corners.
The rubber profile covers exposed sheet-metal or plastic edges and keeps the passing cable, harness, or component away from the cut edge.
Panel thickness and groove dimensions are matched so the grommet grips the opening securely after installation.
The inside opening is sized around the cable, harness, tube, or component that passes through the panel.
Tooling can be reviewed from a panel drawing, cutout dimensions, an existing part, or a physical installation sample.
For quotation and tooling review, define the finished cutout, panel thickness, corner geometry, groove, and required inside clearance. These dimensions control how the grommet fits the panel.
| Drawing Inputs | |
|---|---|
| Product Type | Rectangular / Square Panel Grommets |
| Parent Category | Grommets |
| Materials | EPDM, NBR, Silicone, FKM, Neoprene; other compounds on request |
| Customization | Cutout L × W, corner radius, panel thickness, groove and inside opening |
| Inner Opening Shape | Rectangular, square or project-specific |
Send a panel drawing or sample with the cutout length and width, corner radius, panel thickness, and the item passing through the opening. We use these inputs to check groove fit and corner seating before tooling.
Cutout Size
Radius & Panel Thickness
Typical installations use a square or rectangular cutout in a cabinet, housing, or pass-through panel. The opening geometry and panel thickness should be confirmed before the grommet profile is released for tooling.
For rectangular cable or component openings cut into sheet-metal electrical control cabinet panels.
For wire bundles or harnesses routed through square or rectangular panel openings with defined corner radii.
For non-round openings in machine, instrument, or equipment housings where the groove must match a known panel thickness.
For fabricated enclosures with rectangular cutouts where exposed metal edges must be covered around the pass-through.
For square panel openings around connectors, sensors, or inserted components that need a molded edge profile.
Before tooling, we review the panel cutout and grommet cross-section together. First samples are checked against the specified opening, corner radius, panel thickness, groove engagement, and inside clearance.
Provide the panel drawing, cutout dimensions, grommet drawing, or an existing sample so the mating geometry can be compared before tooling.
We check the corner radius, groove width and depth, lip geometry, and inside opening against the panel and pass-through dimensions.
EPDM, NBR, silicone, FKM, and neoprene can be selected according to temperature, oil, weather, chemical, and flexibility requirements.
First samples can be checked for corner seating, groove engagement, panel retention, and clearance around the cable, harness, or inserted component.
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