Custom Silicone Seals Manufacturer
Application-specific molded silicone seals for housings, valves and industrial assemblies. Develop profile geometry, material selection, tooling and inspection requirements around the real seal interface—not an off-the-shelf assumption.
Real silicone sealing project examples
These published projects illustrate silicone sealing components and related molded parts. Their geometry and operating requirements may differ from your design.
Gasket for Wooden Jar Lids
Silicone gasket component documented in Temco's portfolio.
View project ↗02 / VALVE GASKET2-Inch Agricultural Water-Valve Gasket
A published silicone sealing component for a water-valve assembly.
View project ↗03 / CUSTOM VALVE SEALSilicone Valve Gasket
Related molded sealing work presented in Temco's project library.
View project ↗04 / SILICONE WASHERSilicone Washer
Additional molded silicone component relevant to sealing-component discussions.
View project ↗Build around the interface, pressure and movement
The right molded seal depends on how the mating parts compress or move, the media being sealed, the installation method and the conditions throughout service.
Instead of starting from a generic hardness or profile, an OEM enquiry should define sealing load, groove dimensions, permissible leakage, temperature exposure and required replacement or service life.
Temco's custom silicone manufacturing and mold-design services can be considered together with material selection and validation requirements.
Explore silicone parts manufacturing ↗Questions that shape the seal design
- Static or dynamic?
- Define whether the surfaces are fixed, rotate, reciprocate or cycle through motion.
- How is it installed?
- Share groove, flange, compression limits and mating-component tolerances.
- What does it contact?
- List oils, water, gases, cleaning chemicals, UV or outdoor exposure.
- What counts as acceptance?
- Specify leakage allowance, inspection plan and relevant qualification requirements.
Molded silicone seal configurations
Geometry affects the available contact area, deformation and sealing response. The examples below are design families to review, not promises of a standard part number.
Lip & rotary seals
For sealing interfaces involving shafts or moving surfaces; friction, wear and geometry need specific evaluation.
Silicone diaphragms
Flexible pressure-responsive membranes for selected valve or regulator designs; see our dedicated diaphragm service.
Bellows & boots
Protective or flexible features where articulation, fit and environmental sealing must work together.
Custom T- & D-profiles
Molded profile geometries to evaluate for housings, covers and compression sealing interfaces.
Material and compliance depend on your application
Silicone grades differ in mechanical properties, heat resistance, media compatibility and processing needs. Design requirements should drive the material shortlist.
Silicone grade & hardness
Select a formulation and hardness range considering seal load, compression set, geometry and service temperature. Approve the actual grade with project data.
Media & chemical exposure
Review fluid, gas, oil, cleaners and contact duration. For demanding media, compare alternatives such as fluorosilicone when appropriate.
Regulatory requirements
If food-contact, medical, automotive or other standards apply, identify the exact rule and documentary evidence required before quoting compliance.
Qualification note: There is no single universal silicone operating range or blanket FDA, medical, IP67/IP68 or ISO certification for every custom seal. Any performance or compliance claim must be supported by the selected material, assembly and appropriate evidence.
Plan production from CAD to accepted parts
Part geometry, mold tooling, material processing and inspection planning need to work together. Review manufacturability before committing to expensive tooling changes.
DFM & drawing review
Define interfaces, tolerance stack-up, parting line and draft constraints.
Tooling concept
Assess mold flow, venting, cavity details and demolding.
Molding route
Evaluate compression or LSR injection according to grade, geometry and planned volume.
Samples & checks
Inspect critical parts against agreed drawing and approval criteria.
Learn about silicone mold manufacturing and LSR injection molding.
Define seal performance before acceptance
Testing should follow your operating conditions, part drawing and assembly requirements. An agreed inspection plan is more useful than an unsupported universal pass/fail claim.
Dimensional & material review
- Critical molded features, profile cross-section and drawing revisions
- Compression interference, groove dimensions and visual features
- Relevant hardness, cure and compression-set requirements
- Batch identification or traceability where specified
Application-specific performance
- Leak testing under specified pressure and media
- Temperature cycling or aging based on service exposure
- Dynamic friction or wear considerations where relevant
- Documentation or conformity evidence required by the buyer
Listed checks are potential project acceptance measures; no specific test equipment, pass criteria, certification or batch-testing commitment is implied without an agreed specification.
Send a useful custom silicone seal RFQ
Provide drawings or a physical sample together with key conditions. For a replacement seal, include information about the mating groove and known failure mode.
- 2D / 3D CAD or sample
- Seal profile and critical dimensions
- Static / dynamic operation
- Compression, pressure and temperature
- Media, cleaners and contact duration
- Hardness or material preference
- Relevant standards / tests
- Sampling and annual production volume
Questions about molded silicone seals
Technical considerations to clarify before tooling and quotation.
Can Temco make a custom silicone seal from my drawing?
Submit a drawing, mating-part geometry and application conditions for a DFM review. The manufacturable profile, tooling approach and acceptance criteria are assessed for the specific design.
How should I choose silicone hardness for a seal?
Hardness is one input, not the full specification. Groove design, compression, contact pressure, media, temperature and compression set also influence selection.
Does silicone work with every oil or chemical?
No. Compatibility depends on grade, medium, temperature and duration. Submit the actual exposure list so a suitable material or alternative can be reviewed.
Can you help select between LSR and compression molding?
Yes. The potential molding route depends on geometry, cross-section, material form, tooling, target volume and qualification plan.
Do all your silicone seals come with FDA or ISO certification?
No universal certification is implied. Any specific food-contact, medical, industry or testing requirement must be defined and independently supported for the selected material and product.
What information helps speed up quotation?
Share CAD or a sample, seal interface, critical dimensions, material environment, expected volume and acceptance requirements. Email files to info@temcorubber.com or use the contact form.