Working conditions
Identify temperature, contact fluids and repeated movement.
Custom manufacturing example · Hot-selling NBR rubber round washers/gaskets/various O-rings
CUSTOM RUBBER & SILICONE MANUFACTURING
Hot-selling NBR rubber round washers/gaskets/various O-rings
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
NBR rubber round washers, gaskets, and O-rings can be customized for different circular sealing interfaces. Their outer similarity should not obscure the importance of cross-section. A flat washer and a rounded ring need different seating arrangements and should be matched to the specific joint.
Identify the inner diameter, outside boundary, and working thickness or section shape. The seal should remain supported when the joint closes, without rolling out of place or obstructing a passage. The actual mating surfaces determine the required profile. Keep that geometry consistent when comparing replacement versions.
NBR selection should account for the medium, temperature, and duration of contact. The material name does not assign one operating limit to every shape in the range. During fitting, keep the rubber clean and avoid cuts from nearby edges. If several seal versions are used in one assembly, keep them separated so a nearly matching ring is not installed in a seat intended for a different section.
- Material options
- NBR. Custom formulation and color for the intended contact conditions.
- Hardness selection
- Rubber: 30–90 Shore A. Evaluate hardness within the specified seat for a flat washer or rounded ring; do not compare deformation across different seal formats by diameter alone.
- Custom dimensions
- Identify the inner diameter, outside boundary, and working thickness or section shape.
- Fit & assembly
- If several seal versions are used in one assembly, keep them separated so a nearly matching ring is not installed in a seat intended for a different section.
- Use & inspection
- During fitting, keep the rubber clean and avoid cuts from nearby edges.
Photos illustrate structure or material only. A flat washer and a rounded ring need different seating arrangements and should be matched to the specific joint. 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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