Working conditions
Identify temperature, contact fluids and repeated movement.
Custom manufacturing example · Custom made EPDM/NBR/CR/Silicone rubber o-ring seals
CUSTOM RUBBER & SILICONE MANUFACTURING
Custom made EPDM/NBR/CR/Silicone rubber o-ring seals
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
Custom rubber o-ring seals can be made using EPDM, NBR, CR or silicone formulations selected for the application. The relevant medium, temperature and exposure duration should guide that selection. Rings with the same dimensions can require different materials at different positions in one product.
Define the relaxed ring diameter and section alongside the receiving groove. The groove must support the intended compression and leave appropriate working space. Custom color options can assist identification, but the assigned formulation should remain clear independently of appearance.
Evaluate the chosen seal in the complete joint under representative conditions. Avoid twisting or rolling the ring during installation, and inspect the groove for particles or sharp edges first. During maintenance, check for changes in size, surface condition or contact marks after exposure. If the medium or cleaning process changes, reassess the compound and installed fit together. A nearby nominal size or visually identical material should not be substituted solely because it can be stretched into the same groove.
- Material options
- EPDM / NBR / Silicone. Custom formulation and color for the intended contact conditions.
- Hardness selection
- Rubber: 30–90 Shore A. Silicone: 20–80 Shore A. A nearby nominal size or visually identical material should not be substituted solely because it can be stretched into the same groove.
- Custom dimensions
- Define the relaxed ring diameter and section alongside the receiving groove.
- Fit & assembly
- If the medium or cleaning process changes, reassess the compound and installed fit together.
- Use & inspection
- Avoid twisting or rolling the ring during installation, and inspect the groove for particles or sharp edges first.
Photos illustrate structure or material only. The groove must support the intended compression and leave appropriate working space. 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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