Working conditions
Identify temperature, contact fluids and repeated movement.
Custom manufacturing example · Oil Resistant Rubber Seal Rings NBR Silicone O-Ring
CUSTOM RUBBER & SILICONE MANUFACTURING
Oil Resistant Rubber Seal Rings NBR Silicone 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
Rubber seal rings in NBR or silicone can be custom developed for an oil contact interface. Choose the finished formulation for the particular oil, temperature and exposure conditions. The ring diameter and section must also match the intended seat and compression arrangement.
Compare the full profile before fitting. A ring with a similar outside diameter may have a different cross section or central opening, changing how it sits in the joint. Locate the ring without twisting or stretching it beyond the intended method, and check that closing the assembly does not displace it.
Keep material identification associated with each replacement. NBR and silicone versions should not be assumed equivalent simply because they share a color. During maintenance, inspect for swelling, cuts and persistent flattening. Clean the mating surfaces before refitting and review fluid compatibility if the material changes in service. A tighter seat should not be used to disguise a ring that has lost the shape or condition required for its original application.
- 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. Locate the ring without twisting or stretching it beyond the intended method, and check that closing the assembly does not displace it.
- Custom dimensions
- A ring with a similar outside diameter may have a different cross section or central opening, changing how it sits in the joint.
- Fit & assembly
- A tighter seat should not be used to disguise a ring that has lost the shape or condition required for its original application.
- Use & inspection
- Clean the mating surfaces before refitting and review fluid compatibility if the material changes in service.
Photos illustrate structure or material only. The ring diameter and section must also match the intended seat and compression arrangement. 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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