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BLUESIL Paste 4
Protection and insulation of electrical switchgear at extreme temperatures (aviation), sealing of electric motors, protection of relays, cable connections and battery terminals, static lubrication of small systems.
BLUESIL Paste 4 is a silicone paste based on polydimethylsiloxane oil with inert fillers, designed for the protection and insulation of electrical equipment even at extreme temperatures from -40 to +200 °C. Typical applications include the protection of electrical and electronic components in aviation, the sealing of electric motors, the protection of relays, cable connections and battery terminals, as well as the static lubrication of small systems. The paste is hydrophobic, chemically inert, highly dielectric, and meets MIL and NATO standards.
Documents
HS Code:
39100000
Bluesil Paste 4 is a universal silicone paste from the Bluesil range for a wide variety of industrial applications — lubrication, heat transfer, vacuum sealing, corrosion protection.
Bluesil/Silbione silicone pastes — filled PDMS compounds for thermal bonding, vacuum sealing, dielectric insulation, and heat conduction applications. Paste 4 is tailored to specific applications — the most important properties and areas of application are listed below.
Bluesil Paste 4 is a universal silicone paste for a wide range of industrial applications — from lubrication and thermal bonding to vacuum sealing. A proven Bluesil industry standard.
What makes Paste 4 stand out
What is Paste 4 used for?
Processing
Recommended accessories
Paste 4 in comparison
Direct comparison with related paste products in our range. “— "” = not specified in the data sheet.
Paste 4 Current Product |
Paste 340 → | Paste 408 → | Paste 7 → | |
|---|---|---|---|---|
| Consistency | Universal Paste | Thermal paste | Special paste | Industrial Paste |
| Penetration | see TDS | 280 (1/10 mm) | see TDS | see TDS |
| Thermal conductivity. | see TDS | 0.41 W/m·K | see TDS | see TDS |
| Temperature Range | see TDS | –40 / +250 °C | see TDS | see TDS |
| Color | see TDS | White | see TDS | see TDS |
| Main application | Industrial universal | Thermal bonding electronics | Bluesil Special Application | Industrial lubricant/sealant |
Technical data for BLUESIL Paste 4
| Product Information | |
|---|---|
| Curing type | Non-reactive |
| Container | 100g, 250g, 1kg, 5kg, 20kg, 25kg, 200kg |
| Number of components | 1K (one-component) |
| Mixing Ratio | One-component |
| Brand | Bluesil |
| Manufacturer | Elkem Silicones |
| Consistency | Thixotropic |
| Further Properties | |
|---|---|
| UV resistance | Yes |
| Physical Properties | |
|---|---|
| Cured Color | Transparent |
| Self-leveling | No |
| Electrical Properties | |
|---|---|
| Electrical Insulation | Yes |
| Product Approvals | |
|---|---|
| Food contact | No |
| Medical grade | No |
Please refer to the technical data sheet (TDS) in the "Documents" tab for binding values.
Documents and data sheets
Click on a document for the preview or the download icon for direct download.
Technical Data Sheets (TDS) 3
Frequently Asked Questions about Paste 4
Practical application and design questions — answered by SILITECH.
Bluesil Paste 4: Universal silicone paste from the Bluesil range for diverse industrial applications — lubrication, heat transfer, vacuum sealing, corrosion protection. Main applications: industrial lubrication, vacuum sealing, corrosion protection.
Apply to clean, dry surfaces — degrease beforehand if necessary. Application with brush, spatula, or paste gun. For thermal pastes, apply thinly and evenly — excessive layer thickness reduces thermal conductivity. Pastes can be diluted with aliphatic or chlorinated solvents if thin layers are required.
Store in the unopened original container in a dry, cool place — typically standard between +5 and +30 °C, exact values see TDS. Consult the Safety Data Sheet (SDS) before use. Observe the expiration date on the packaging — Elkem guarantees the sales specifications only up to the stated date.
In the comparison table above, you will find related products with similar functions or related specifications. If you are unsure about the optimal choice, we will be happy to advise you — contact SILITECH with your application (desired property, substrate, processing workflow).
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Our technical team provides personal advice on material selection, processing questions, and individual requirements. Fast and competent.
Product Specifications
| Product Information | |
|---|---|
| Container | 100 g or 250 g or 1 kg or 5 kg or 20 kg or 25 kg or 200 kg |
| Curing type | Non-reactive |
| Number of components | 1K (one-component) |
| Mixing Ratio | One-component |
| Brand | Bluesil |
| Manufacturer | Elkem Silicones |
| Consistency | Thixotropic |
| Further Properties | |
|---|---|
| UV resistance | Yes |
| Physical Properties | |
|---|---|
| Cured Color | Transparent |
| Self-leveling | No |
| Electrical Properties | |
|---|---|
| Electrical Insulation | Yes |
| Product Approvals | |
|---|---|
| Food contact | No |
| Medical grade | No |
| Keywords | |
|---|---|
| Keywords | |
| Physical & Thermal | |
|---|---|
| Density (23°C) | 1.0 g/cm³ |
| Temperature Resistance (Continuous) | -40 to 200 °C |
| Peak Temperature (Short-term) | 200 °C |
| Storage | |
|---|---|
| Shelf life in original packaging | 36 months |
| Storage Temperature | 2 to 40 °C |
Documents and data sheets
Safety Data Sheets (SDS) and Technical Data Sheets (TDS) for download:
- Bluesil Paste 4 - Fiche Technique FR.pdf (125 KB)
- Bluesil Paste 4 - Fiche de Sécurité FR.pdf (303 KB)
- Bluesil Paste 4 - Scheda di Sicurezza IT.pdf (294 KB)
- Bluesil Paste 4 - Safety Data Sheet DE.pdf (204 KB)
- Bluesil Paste 4 - Technical Data Sheet EN.pdf (441 KB)
- Bluesil Paste 4 - Technical Data Sheet DE.pdf (131 KB)