Working conditions
Identify temperature, contact fluids and repeated movement.
Custom manufacturing example · Silicone isolation washers waterproof NBR rubber washer seals
CUSTOM RUBBER & SILICONE MANUFACTURING
Silicone isolation washers waterproof NBR rubber washer 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
Silicone isolation washers can place a compliant separating layer between adjoining components, while an NBR washer seal should be selected for its specific sealing joint. Define the intended duty before choosing the material and section. Mechanical separation, electrical insulation, and water sealing require different complete assembly assessments and should not be inferred from a washer's appearance.
Check the inner diameter, outer support area, and installed thickness. Fasteners or locating shoulders should not create an unintended contact route around the rubber where separation is needed. For a seal, the faces must apply the intended compression around a continuous contact path.
Install flat on clean surfaces and bring the joint together evenly. Keep rotating hardware from twisting the washer out of position. During maintenance, look for cut edges, embedded particles, and regions pushed into an unsupported gap. Preserve the selected compound and geometry during replacement rather than adding extra washers to compensate for a closing condition that needs correction in the surrounding assembly.
- 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. For a seal, the faces must apply the intended compression around a continuous contact path.
- Custom dimensions
- Check the inner diameter, outer support area, and installed thickness.
- Fit & assembly
- Mechanical separation, electrical insulation, and water sealing require different complete assembly assessments and should not be inferred from a washer's appearance.
- Use & inspection
- Preserve the selected compound and geometry during replacement rather than adding extra washers to compensate for a closing condition that needs correction in the surrounding assembly.
Photos illustrate structure or material only. Fasteners or locating shoulders should not create an unintended contact route around the rubber where separation is needed. 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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