Working conditions
Identify temperature, contact fluids and repeated movement.
Custom manufacturing example · Waterproof rubber gasket/flexible rubber washer/rubber seal
CUSTOM RUBBER & SILICONE MANUFACTURING
Waterproof rubber gasket/flexible rubber washer/rubber seal
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
This flexible rubber washer is a custom part for assemblies that need a compliant layer at a joint or opening. Its shape can follow the mating surface instead of forcing a standard round washer into an unsuitable space. Available material choices include silicone and other rubbers, selected individually for the intended environment.
A useful starting point is the assembled gap. The washer must fit that space under compression while preserving clearance around the central passage. If the joint closes against a mechanical stop, the relationship between stop height and washer thickness determines the squeeze. If there is no stop, tightening control becomes especially relevant because excessive compression can force material outward.
Fit the part flat, without folding its inner edge into the opening. Recesses, screw heads, and nearby ribs should leave room for the intended contact area. For water sealing, evaluate the finished connection with its actual surfaces and fasteners. During maintenance, remove residue from the seat and replace washers with torn edges or an uneven compressed shape.
- Material options
- Silicone. Custom formulation and color for the intended contact conditions.
- Hardness selection
- Silicone: 20–80 Shore A. If there is no stop, tightening control becomes especially relevant because excessive compression can force material outward.
- Custom dimensions
- If the joint closes against a mechanical stop, the relationship between stop height and washer thickness determines the squeeze.
- Fit & assembly
- The washer must fit that space under compression while preserving clearance around the central passage.
- Use & inspection
- During maintenance, remove residue from the seat and replace washers with torn edges or an uneven compressed shape.
Photos illustrate structure or material only. The washer must fit that space under compression while preserving clearance around the central passage. 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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