1" Inside Diameter (ID) Rubber Grommets

Every grommet on this page has a 1" inside diameter (ID), the clear opening left for whatever passes through it. A 1" opening suits a small hose, a pair of power cords, or 3/4" EMT conduit passing through sheet metal, plywood or a plastic housing. The 7 styles here fit panel holes of 1-1/4" or 1-3/8", with groove widths of 1/16", 3/16", 1/4", 3/8" and 1/2", so you can match both the hole you drilled and the thickness of the material.

How to size a 1" ID grommet. Start with the item going through: measure its outside diameter, or the widest point of any plug or fitting that has to pass, and make sure it clears 1". Next, measure the hole with calipers; the grommet should be listed as fitting that exact hole size, because the groove has to sit tight against the edge. Last, measure the panel thickness and choose a groove width equal to it or slightly wider. If the panel is thicker than the widest groove listed, drill to a larger hole size instead and step up in ID. Searching by hole size rather than opening? Use the "fits holes" link below.

Related sizes: 3/4" ID grommets · 1-1/4" ID grommets · Grommets that fit 1" holes · All rubber grommets