Working conditions
Identify temperature, contact fluids and repeated movement.
Custom manufacturing example · Silicone Rubber End Caps for Tube Protection
CUSTOM RUBBER & SILICONE MANUFACTURING
Silicone Rubber End Caps for Tube Protection
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 rubber tube end caps provide a removable protective cover over the exposed tube ends. The internal diameter and engagement length should follow the tube's outside dimensions, including any coating or formed edge. The cap needs enough depth to sit properly without being forced against the tube end before its sidewall has engaged.
Inspect the tube edge before fitting. A burr can cut the cap from the inside, leaving damage that is initially hidden by the installed position. Remove debris from both the tube end and the cap cavity so particles are not trapped against the covered surface.
Custom dimensions, hardness and color options allow the part to be matched to the tube and handling conditions. Evaluate retention during the actual movement or storage process, particularly if adjacent objects can brush against the cap. When removing it, grip the intended exposed area rather than stretching only one thin edge. Any requirement to contain liquid or pressure needs assessment of the complete cap and tube arrangement. Replace caps with internal cuts or a permanently enlarged opening.
- Material options
- Custom silicone compound; formulation and geometry developed together.
- Hardness selection
- Silicone options: 20–80 Shore A. When removing it, grip the intended exposed area rather than stretching only one thin edge.
- Custom geometry
- The internal diameter and engagement length should follow the tube's outside dimensions, including any coating or formed edge.
- Fit evaluation
- A burr can cut the cap from the inside, leaving damage that is initially hidden by the installed position.
- Color & OEM
- Custom colors; OEM identification positioned outside closure contact surfaces.
Photos illustrate structure or material appearance only. The internal diameter and engagement length should follow the tube's outside dimensions, including any coating or formed edge. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.
FIND THE RIGHT FIT
End Cap Size Catalog
Compare inside diameter A with the outside of the part being covered. Check inside depth C and overall dimensions B and D for available clearance. These RSE references show a round cap with one closed end.
RSE End Caps
43 closed-end cap sizes. A is the inside diameter and C is the usable internal depth; B and D describe the outside envelope.
DIMENSION GUIDE
PRODUCT APPEARANCE
| P/N | A | B | C | D | Color | Unit |
|---|---|---|---|---|---|---|
| RSE3.7-7-9 | 3.7 | 7 | 9 | 11 | black,white | mm |
| RSE4.7-8-9 | 4.7 | 8 | 9 | 11 | black,white | mm |
| RSE5.7-9-10 | 5.7 | 9 | 10 | 12 | black,white | mm |
| RSE6.7-10-10 | 6.7 | 10 | 10 | 12 | black,white | mm |
| RSE7.7-11-11 | 7.7 | 11 | 11 | 13 | black,white | mm |
| RSE8.7-12-12 | 8.7 | 12 | 12 | 14 | black,white | mm |
| RSE9.7-14-13 | 9.7 | 14 | 13 | 15 | black,white | mm |
| RSE10.7-15-14 | 10.7 | 15 | 14 | 16 | black,white | mm |
| RSE11.7-16-15 | 11.7 | 16 | 15 | 17 | black,white | mm |
| RSE12.7-17-15 | 12.7 | 17 | 15 | 18 | black,white | mm |
| RSE13.7-18-15 | 13.7 | 18 | 15 | 18 | black,white | mm |
| RSE14.7-19-15 | 14.7 | 19 | 15 | 18 | black,white | mm |
| RSE15.7-20-16 | 15.7 | 20 | 16 | 19 | black,white | mm |
| RSE16.7-21-16 | 16.7 | 21 | 16 | 19 | black,white | mm |
| RSE17.7-22-16 | 17.7 | 22 | 16 | 19 | black,white | mm |
Need a different fit? Share the opening dimensions, mating profile and intended use for a custom size.
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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