Working conditions
Identify temperature, contact fluids and repeated movement.
Custom manufacturing example · Hot-selling different sizes rubber silicone O-ring/molded Buna-N seal
CUSTOM RUBBER & SILICONE MANUFACTURING
Hot-selling different sizes rubber silicone O-ring/molded Buna-N seal
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
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
A rubber silicone O-ring must match the groove through both its inside diameter and its cross-section. This custom ring offering also includes Buna-N material options, allowing the compound to be selected for the application. Similar overall diameters do not make two rings interchangeable if their sections occupy different amounts of space.
Start with the mating parts and identify how the ring will be compressed. Groove depth, available width, and the assembled clearance determine the room for the rubber. Select the compound for the actual medium and temperature before comparing hardness and installation behavior.
During fitting, keep the ring free of twist and avoid stretching it over sharp features unnecessarily. Check that it remains in its seat as the mating component moves into position. Where several sizes are used in the same assembly, keep them separated during servicing so that close dimensions are not confused. Inspect removed rings for cuts and persistent flattening. Use a matching replacement rather than attempting to recover the original section by pulling or reshaping an old seal.
- Material options
- Silicone. Custom formulation and color for the intended contact conditions.
- Hardness selection
- Silicone: 20–80 Shore A. During fitting, keep the ring free of twist and avoid stretching it over sharp features unnecessarily.
- Custom dimensions
- A rubber silicone O-ring must match the groove through both its inside diameter and its cross-section.
- Fit & assembly
- Check that it remains in its seat as the mating component moves into position.
- Use & inspection
- Inspect removed rings for cuts and persistent flattening.
Photos illustrate structure or material only. Groove depth, available width, and the assembled clearance determine the room for the rubber. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.
From part requirements to production
01
Define the part
Identify key dimensions, mating surfaces and quantity
02
Review material & tooling
Agree the compound and manufacturing approach
03
Evaluate the sample
Review the fit and agreed requirements in the assembly
04
Produce & inspect
Manufacture and check against the approved requirements
Review the intended assembly
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.
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