Working conditions
Identify temperature, contact fluids and repeated movement.
Custom manufacturing example · Rubber o ring/rubber NBR silicone seal o-ring
CUSTOM RUBBER & SILICONE MANUFACTURING
Rubber o ring/rubber NBR silicone seal o-ring
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
An O-ring made from nitrile rubber, also called NBR, needs both the correct dimensions and a formulation suited to the joint. Rings that look nearly identical can differ in cross-section or compound, and a material label such as NBR or silicone should not be treated as interchangeable across applications.
Identify the intended groove and contact conditions before fitting. The ring should reach its seat without being forced over a sharp feature or stretched beyond the assembly method appropriate to it. Check that the mating components provide the support and compression required by the selected configuration.
Evaluate the complete connection under its specified medium, temperature, and movement. A ring's flexible appearance does not establish pressure capability or a service interval. During maintenance, keep the replacement configuration clear rather than selecting from visual resemblance alone. Inspect the removed ring for damage and lasting deformation, then review the surrounding geometry if the same defect recurs. Correct identification helps avoid repeating a material mismatch while mechanical inspection addresses causes that no change of compound will resolve.
- Material options
- NBR / Silicone. Custom formulation and color for the intended contact conditions.
- Hardness selection
- Rubber: 30–90 Shore A. Silicone: 20–80 Shore A. The ring should reach its seat without being forced over a sharp feature or stretched beyond the assembly method appropriate to it.
- Custom dimensions
- Rings that look nearly identical can differ in cross-section or compound, and a material label such as NBR or silicone should not be treated as interchangeable across applications.
- Fit & assembly
- Check that the mating components provide the support and compression required by the selected configuration.
- Use & inspection
- Inspect the removed ring for damage and lasting deformation, then review the surrounding geometry if the same defect recurs.
Photos illustrate structure or material only. Rings that look nearly identical can differ in cross-section or compound, and a material label such as NBR or silicone should not be treated as interchangeable across applications. 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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