Custom Silicone O‑Ring Manufacturer
Custom silicone O-rings for OEM sealing applications, designed around your drawings, required dimensions, sealing groove and operating environment.
Discuss O-ring inside diameter, cross-section, silicone grade, hardness and production volume before tooling decisions.
Real O-Ring Components & Related Tooling
These published projects represent different component materials and scopes; a mold project is not a finished O-ring product.
Silicone Washer and O-Ring
A real Temco silicone washer and O-ring component reference.
View component project ↗ 02 / SILICONE TOOLINGSilicone Washer & O-Ring Mold
Related mold project, not a completed O-ring component.
View tooling project ↗ 03 / RUBBER O-RING REFERENCEAutomotive Fuel Injector O-Ring
A published O-ring part for an automotive application; silicone material is not claimed.
View O-ring project ↗Silicone O-Ring Manufacturing Processes
The molding process is selected according to O-ring geometry, compound requirements, tooling strategy and production volume.
Liquid Silicone Rubber (LSR) Injection Molding
LSR injection molding can be used for custom silicone sealing components where automated material handling, repeatable cavity filling and higher production volumes are important considerations.
- Suitable for selected small and precision O-ring geometries
- Supports automated repeat production
- Controlled molding conditions
- Tooling developed around part geometry and production requirements
Compression Molding
Compression molding is widely used for custom silicone O-rings produced from high-consistency silicone rubber. The process can be suitable for custom diameters, larger cross-sections and production volumes where compression tooling is commercially appropriate.
- Suitable for many custom O-ring sizes and cross-sections
- Useful for oversized industrial sealing components
- Supports a range of silicone hardness requirements
- Practical for prototype, small-batch and repeat OEM production
Silicone Material Options for Custom O-Rings
Silicone compound selection depends on hardness, operating environment, temperature requirements, media exposure and customer documentation requirements.
Platinum-Cured Silicone
Can be considered where cleaner cure chemistry, low residual by-products or application-specific material documentation is required.
Peroxide-Cured Silicone
A widely used option for industrial silicone components where processing and application requirements support peroxide-cured compounds.
Industrial VMQ
VMQ silicone provides useful resistance to weathering, ozone and temperature variation. Actual limits depend on the selected compound.
Custom Hardness Options
Hardness can be selected according to groove compression, sealing force, flexibility and mechanical requirements.
O-Ring Tooling & Engineering Review
Custom O-ring manufacturing starts with more than simply selecting an inside diameter and cross-section. Groove geometry, compression, parting-line position, compound behavior and production volume can all influence tooling and process decisions.
Temco Rubber reviews customer drawings, dimensional requirements or physical samples before tooling. Mold design and manufacturing are coordinated with the selected molding process to support repeatable OEM production.
If your application requires a flat sealing, spacing or insulation component rather than a groove-based seal, review our custom silicone washers .
Discuss Your O-Ring Application
What We Need for Your Custom O-Ring RFQ
Share a drawing or sample, installed dimensions and actual sealing conditions. Include groove details when the O-ring will sit in a defined gland.
Hardness, cure method, tolerances and compliance documents should be assessed for the specified compound and part—not assumed for every O-ring.
Send Your O-Ring Specification ↗- Drawing, CAD or physical sample
- Inside diameter and cross-section
- Groove and mating geometry
- Static / dynamic duty and compression
- Pressure, temperature and contact media
- Silicone grade or hardness preference
- Critical dimensions and required tests
- Prototype and annual order volume
Frequently Asked Questions
Common engineering and purchasing questions about custom silicone O-ring manufacturing.
Can you manufacture non-standard silicone O-ring sizes?
Yes. Temco Rubber can manufacture custom silicone O-rings based on specified inside diameter, cross-section, drawings or samples. Non-standard dimensions can be reviewed where standard catalog sizes do not match the assembly requirements.
What information should I provide for an O-ring RFQ?
Useful RFQ information includes inside diameter, cross-section, required hardness, expected operating conditions, media exposure, quantity and any available drawing or physical sample. Groove dimensions can also help when the sealing application requires engineering review.
What is the difference between a silicone O-ring and a silicone washer?
Silicone O-rings are generally intended for groove-based sealing, where the circular cross-section is compressed between mating surfaces. Silicone washers are typically used for flat sealing, spacing, insulation or load distribution. See our custom silicone washers for related applications.
How do you select the silicone compound for an O-ring?
Compound selection depends on hardness, compression requirements, operating temperature, media exposure and customer documentation requirements. Actual performance limits should be evaluated against the selected silicone compound and real service conditions.
Need a Custom Silicone O-Ring?
Send your drawing, dimensions, sample or application requirements. Our team can review O-ring geometry, silicone compound requirements and the appropriate production approach before tooling.
Request an O-Ring Quote