Custom manufacturing example · Custom made silicone open oval round rubber grommet

CUSTOM RUBBER & SILICONE MANUFACTURING

Custom made silicone open oval round rubber grommet

A custom component for your assembly.

Define the mating surfaces, dimensions and working conditions. ETOL manufactures the part to the agreed design and material.

Factory direct
Made to order
Drawing & sample support

Share the part, its application and your estimated quantity.

Customize the fit, material and finish

Vulcanization workshop illustration with green molding presses and blue collection bins

Material & hardness

Selected for the contact, temperature and movement

Color & finish

Define the visible surfaces and intended color

Shape & dimensions

Develop holes, lips and walls around the mating parts

Mounting & fit

Match the attachment and installation method

Product Overview

An open rubber grommet can be custom molded in silicone with an oval or round passage to suit the routed component. The center and outside dimensions serve different functions. A suitable passage size does not establish whether the retaining groove will fit the panel correctly.

Compare the selected oval or round configuration with the actual cutout, including corner transitions and wall thickness. Check the passing component's profile and the space needed during assembly. An open center should not be interpreted as a split construction that can be wrapped around an existing cable unless the selected part includes that feature.

Fit the grommet without folding the retaining lips and inspect the ends of any elongated section for uneven seating. Route the cable or component so that it does not constantly load one side of the passage. The open design leaves a route through the center, so any required water or dust exclusion must be addressed by the complete assembly. Inspect local wear where the passing component contacts the inner edge during service.

Material options: Custom silicone or rubber formulation, with dimensions and color adapted to the mating component.
Hardness range: Silicone: 20–80 Shore A; rubber: 30–90 Shore A. Balance retaining-lip flexibility with support at the elongated ends, where sideways cable loading can distort the opening.
Custom profile & fit: Compare the selected oval or round configuration with the actual cutout, including corner transitions and wall thickness.
Assembly considerations: Fit the grommet without folding the retaining lips and inspect the ends of any elongated section for uneven seating.
Design check: Check the passing component's profile and the space needed during assembly.

Photos illustrate structure or material only. A suitable passage size does not establish whether the retaining groove will fit the panel correctly. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.

Choosing a material or hardness? Explore the selection guide →

FIND THE RIGHT FIT

Oval Grommet Size Catalog

Choose a through-hole or blind-hole profile, then compare the dimensions for your panel and cable arrangement.

Through-Hole Oval Grommets

133 sizes with an open passage for cables. Match the outside dimensions, opening, panel hole, panel thickness and overall thickness. Dimensions are in millimeters (mm).

PRODUCT FORM

Representative profile. Refer to the table for available dimensions.

P/N	OD	ID	GD	GW	T
OG9001	29×49	20×40	23×43	4	8
OG9002	71.5×37.2	53.5×19.2	59.5×25.2	3.5	7.2
OG9003	112×43.5	98.5×30	101.5×33	3.5	7.2
OG9004	83×40	71×28	75×32	2	6
OG9005	39×19	32×12	35×15	2	5
OG9006	19.5×10	13.5×4	15.5×6	2	5
OG9007	14×24	8×18	10×20	1	4
OG9008	14×24	8×18	10×20	1.5	4.5
OG9009	14×24	8×18	10×20	2	5
OG9010	14×24	8×18	10×20	2.5	5.5
OG9011	14×24	8×18	10×20	3	6
OG9012	14×24	8×18	10×20	4	7
OG9013	14×29	8×23	10×25	1	4
OG9014	14×29	8×23	10×25	1.5	4.5
OG9015	14×29	8×23	10×25	2	5

Blind-Hole Oval Grommets

16 sizes with a closed oval profile. Compare the groove dimensions and panel thickness for the mounting fit. Dimensions are in millimeters (mm).

PRODUCT FORM

Representative profile. Refer to the table for available dimensions.

P/N	OD	ID	GD	GW	T
GBH2002	15×30	10×25	13×27	3	10
GBH2003	23×48	17×42	20×44	3	10
GBH2004	25×51	16×42	20×45	2	9
GBH2005	25×51	16×42	20×50	2	9
GBH2006	30×45	21×37	25×40	2	9
GBH2007	37×91	24×78	30×85	2	11
GBH2008	46×84	29×67	37×75	2	11
GBH2009	46×90	33×77	40×83	3	14
GBH2010	58×83	45×70	50×75	3	14
GBH2011	41×105	26×90	35×100	2.5	9.5
GBH2013	38×83	26×71	30×75	4	9
GBH2014	48×128	26×110	40×120	3	10
GBH2015	25×40	16×31	20×35	1.5	5.5
GBH2016	38×53.8	24×39.8	31×46.8	2.54	6.35
GBH2017	26×66	17×57	20×60	1	5

Can't find the right size? Contact us for custom dimensions tailored to your requirements.

From part requirements to production

Define the part

Identify key dimensions, mating surfaces and quantity

Review material & tooling

Agree the compound and manufacturing approach

Evaluate the sample

Review the fit and agreed requirements in the assembly

Produce & inspect

Manufacture and check against the approved requirements

Review the intended assembly

Working conditions

Identify temperature, contact fluids and repeated movement.

Material and structure

Consider hardness together with wall thickness and support.

Installation

Check access, mating dimensions and the fitting sequence.

Ordering this custom component

Can the shape be adjusted to my mating parts?

Yes. Show the receiving opening, contact surfaces and clearance limits. We can review the dimensions and retaining features around the intended fit.

Which details should be agreed before tooling?

Agree the critical dimensions, material, hardness, visible surfaces and sample requirements. Explain how the part is installed and which interfaces control its function.

Can a sample help define the replacement?

A sample can help explain the structure. Compare it with the assembly because wear, swelling or compression may have changed its original dimensions.

How is the quotation for this part determined?

The material, part geometry, tooling, quantity and finishing affect the quotation. Include the intended batch size and delivery destination when describing your requirements.

DISCUSS THIS COMPONENT

Describe the part you need.

Share the fit, operating conditions and quantity with our manufacturing team.