Custom Silicone Sleeve Manufacturer for Equipment Protection
| Share | |
|---|---|
| Categories | Custom Silicone Case |
| Brand | FromRubber Silicone & Plastic OEM Manufacturer |
| Model | BH-sleeve |
| Product Name | Custom Silicone Sleeve |
| Material | Solid silicone rubber |
| Hardness | 30-80 Shore A |
| Tolerance | ISO 3302-1 M2 |
| Color | Any Pantone shade |
| Temperature | -40 C to +220 C |
| Surface | Matte or soft-touch |
| Logo | Silk-screen or laser etched |
| Molding | Compression, LSR, overmold |
| MOQ | 1,000 pcs (trial from 100) |
| Lead Time | Quote 3 h; sample 3-5 days |
| Certification | IATF 16949 / ISO 9001 |
| FOB port | Shenzhen |
| Terms of Payment | L/C, D/A, D/P, Western Union, MoneyGram, T/T, Paypal |
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Custom Silicone Sleeve: What It Is and What We Build
A custom silicone sleeve is a molded rubber cover that wraps around a device, tool, or component. It protects the part underneath and changes how the product feels in the hand. We do not sell stock sizes. Every sleeve starts from your own drawing or sample, so the inner cavity, the wall thickness, and every opening match your product.
We are a silicone and plastic molding factory in Dongguan, China. Since 2010 we have produced silicone rubber protective sleeves, covers, and cases for electronics, medical devices, automotive parts, and industrial equipment.
- 15+Years of OEM and ODM molding
- 2Factories, 12,000 m² of floor space
- M2ISO 3302-1 dimensional tolerance class
- 92%First-pass yield, or higher
What You Can Customize
Six things you decide. We mold to your numbers, not to a catalog.
Hardness
30 to 80 Shore A, held to a ±2.5° tolerance.
Shape and wall thickness
Molded to the outline of your device, with wall thickness set where you need stiffness or flex.
Color
Matched to any Pantone shade.
Surface finish
Matte, textured, or soft-touch with an anti-static top coat.
Logo and markings
Silk-screen printed or laser etched into the surface.
Assembly
Self-adhesive backing, or molded directly over a metal or plastic insert.
Specifications
| Property | Value |
|---|---|
| Base material | Solid silicone rubber |
| Hardness | 30–80 Shore A, ±2.5° |
| Dimensional tolerance | ISO 3302-1 class M2 |
| Elongation at break | 350–650% |
| Tear strength | ≥25 kN/m |
| Operating temperature | −40 °C to +220 °C (250 °C short term) |
| Dielectric strength | ≥20 kV/mm |
| Volume resistivity | ≥10¹⁴ Ω·cm |
| Color | Transparent or white base; any Pantone shade |
| First-pass yield | ≥92% |
Material Options for Different Environments
| Material | Key property | Choose it when |
|---|---|---|
| Solid silicone rubber | 30–80 Shore A, −40 to +220 °C | Standard protective sleeves and covers |
| Food-grade silicone (fume-cured) | Meets FDA 21 CFR 177.2600 and LFGB | The sleeve touches food, or is used by children |
| NBR | 40–90 Shore A, −30 to +120 °C | The sleeve sees oil, grease, or fuel |
| FKM (Viton) | 60–90 Shore A, −20 to +250 °C | Strong solvents, acids, or high heat |
Most protective sleeves are made from general solid silicone. Step up to FKM only when the sleeve has to survive fuel, oil, or strong solvents, and remember that FKM stiffens at low temperature, so it is a poor choice for parts that must stay flexible in the cold. General silicone, in turn, is not the right material for high-aromatic mineral oils or strong solvents.
How We Make It
Drawing Review → Tooling → Compounding → Compression Molding & Curing → Deflashing → Post-Curing → Finishing → Inspection
Compression molding
Cure temperature 150–190 °C at 150–300 T. Best for large parts, multiple cavities, and multi-color work.
Vacuum compression
The press pulls a vacuum of −0.095 MPa as it closes, which removes trapped air and prevents short shots on thick walls.
Liquid silicone rubber injection
Holds ±0.02 mm and covers 10–70 Shore A, for small, thin, or ultra-soft sleeves.
Overmolding and insert molding
Silicone bonded over metal or plastic using primer systems and plasma treatment.
Finishing
Silk-screen printing at ±0.05 mm, spray coating at 10–25 µm, and laser etching with a 0.015 mm spot.
Which process fits your sleeve?
If the part is small, thin-walled, or softer than 30 Shore A, LSR is usually the answer. If you need several colors, a large part, or the lowest tooling cost, compression molding is the better route.
Quality and Testing
| Check | What we hold |
|---|---|
| Dimensional | ISO 3302-1 class M2, verified on a 2.5D optical measuring instrument |
| Tear strength | ≥35 kN/m on fume-cured silicone |
| Compression set | ≤20% at 25% deflection, 100 °C × 22 h |
| Abrasion | RCA tape, 175 g load, 300+ cycles with no print breakthrough |
| Compliance | RoHS 2.0 and REACH SVHC, tested by SGS |
| First-pass yield | ≥92%, tracked in production |
We run IATF 16949:2016, ISO 9001:2015, and ISO 14001:2015. Every batch of raw compound is checked against the supplier certificate of analysis before it enters production, and molded parts are inspected again after trimming.
Where Silicone Sleeves Are Used
- Dust and water protection — covers for ports, connectors, and handheld terminals
- Grip and anti-slip — sleeves that give tools and devices a secure hold
- Shock absorption — corner and edge sleeves that take impact away from the part
- Electrical insulation — covers over live or conductive surfaces
- Heat and contact protection — sleeves that keep a hot surface away from hands
- Branding and feel — multi-color sleeves that carry your logo and color scheme
These sleeves go into consumer electronics, medical devices, automotive interiors, industrial equipment, and household appliances. Recent work includes a seat belt buckle silicone sleeve for a car interior, and a silicone cover for handheld containers for a hygiene brand.
Ordering: What to Send, and How Long It Takes
Whether you arrive with a finished design or a rough concept, the process starts the same way. We work as a custom silicone component supplier with OEM and ODM options, so you can bring either.
What to send us
- A 3D file (STEP or IGES), or a 2D drawing (DWG, DXF, PDF) with tolerances marked
- No drawing? Send a physical sample and we reverse-engineer it
- The material and hardness you need
- Color (Pantone code) and surface finish
- Estimated order quantity
Lead time
| Stage | Time |
|---|---|
| Quotation | Within 3 hours |
| Sample tooling and samples | 3–5 working days |
| Production tooling | 10–12 working days |
| Mass production | 7–10 working days after order confirmation |
| Minimum order | 1,000 pcs (trial runs from 100 pcs by arrangement) |
We quote in English, and the tool is yours. Once you have paid for it, you can move it, store it, or take it to another molder. Your drawings are covered by an NDA on request.
Frequently Asked Questions
What is a custom silicone sleeve used for?
It wraps and protects a device, tool, or component. Typical uses are dust and water covers for connectors, grip sleeves for handheld devices, edge protection for equipment, and insulation over live parts.
What do I need to send to get a quote?
A 3D file (STEP or IGES) or a 2D drawing (DWG, DXF, PDF) with tolerances. If you have no drawing, send a physical sample. Add the material, hardness, color, finish, and estimated quantity, and we will come back with a price and a tooling plan.
What is the difference between general silicone and food-grade silicone?
General solid silicone is the standard choice for protective sleeves. Food-grade silicone is made from fume-cured compound and meets FDA 21 CFR 177.2600 and LFGB, so it is used where the sleeve touches food or is handled by children.
When should I use FKM instead of silicone?
FKM is for fuel, oil, strong solvents, and high heat. It holds up to 250 °C and resists chemicals that attack standard silicone. It does stiffen at low temperature, so it is not the right choice for parts that must flex in the cold.
What are the limits of silicone sleeves?
General silicone has poor resistance to high-aromatic mineral oils and strong solvents, and it is not the stiffest material available. If a sleeve has to hold a rigid shape or carry a structural load, plastic or metal parts are a better fit.
What is the minimum order quantity?
1,000 pcs for standard production. Trial orders from 100 pcs can be arranged.
Get your silicone sleeve quoted within 3 hours
- Send your drawing, or a photo of the part you need covered
- An engineer replies with a price and a tooling plan
- Ask for an NDA before you share files; your design stays yours
- Upload ZIP, RAR, JPG, PNG, PDF, up to 20 MB
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