Working conditions
Identify temperature, contact fluids and repeated movement.
Custom manufacturing example · Food grade silicone rubber o-ring flat washers/gaskets for bottle
CUSTOM RUBBER & SILICONE MANUFACTURING
Food grade silicone rubber o-ring flat washers/gaskets for bottle
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
Gaskets for bottle closures provide a rubber sealing element between the cap and its mating surface. The custom ring dimensions should follow the receiving seat, including the cross section and the space available when the closure is tightened. A flat washer profile and a round O-ring profile require different support geometry.
Check where the gasket is retained inside the closure and how it meets the bottle rim. The rubber should remain located during opening and closing without twisting or falling into the container. A gasket that is too thick can prevent the cap from reaching its intended position, while an undersized section may leave insufficient contact.
Choose the specific silicone compound for the contents, temperature, and cleaning routine, together with any applicable food-contact requirements. Keep the ring and its recess clean before assembly, removing residue from beneath the gasket. Inspect the seating after fitting and evaluate the complete bottle closure under its intended storage and handling conditions. Replace a damaged ring with the matching profile rather than substituting one that only has a similar overall diameter.
- Material options
- Silicone. Custom formulation and color for the intended contact conditions.
- Hardness selection
- Silicone: 20–80 Shore A. The rubber should remain located during opening and closing without twisting or falling into the container.
- Custom dimensions
- The custom ring dimensions should follow the receiving seat, including the cross section and the space available when the closure is tightened.
- Fit & assembly
- Inspect the seating after fitting and evaluate the complete bottle closure under its intended storage and handling conditions.
- Use & inspection
- Keep the ring and its recess clean before assembly, removing residue from beneath the gasket.
Photos illustrate structure or material only. A gasket that is too thick can prevent the cap from reaching its intended position, while an undersized section may leave insufficient contact. 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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