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Bluesilsilicone pastes & greases

BLUESIL Paste 4

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.

Temperature range
-40 to 200 °C
Density
1 g/cm³
Cured Color
Transparent
Self-leveling
No

CHF 0.00 / pc.
  • Color cured - Transparent
  • Food contact
  • Self-leveling
  • Medical grade
  • Curing type
  • Electrical Insulation
  • Container
  • Number of components
  • UV resistance
  • Mixing Ratio
  • Brand
  • Manufacturer
  • Consistency
Your selection BLUESIL Paste 4
General terms and conditions of business

HS Code: 39100000

BLUESIL Paste 4 sample offer

Technical Data

Typical values, not a specification. The technical data sheet (TDS) is binding.

Physical and thermal

Density (23 °C)
1 g/cm³
Temperature resistance (duration)
-40 to 200 °C
Peak temperature (briefly)
200 °C

Storage

Shelf life in original packaging
36 months
Storage Temperature
2 to 40 °C

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
Keywords
  • Silicone
  • BLUESIL
  • ELKEM
  • Swiss warehouse
  • Aviation
  • Silicone paste
  • Paste 4
  • Electronics protection
  • MIL S 8660 C
  • Dielectric Paste

Product Description

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.

Universal silicone paste

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.

Paste 4 in numbers
Universal
Industry
Bluesil
Standard
Silicone
Paste
Swiss
Warehouse

What makes Paste 4 stand out

Universal application
Versatile Bluesil silicone paste.
Bluesil industrial standard
Proven industry standard for diverse tasks.
Lubrication and sealing effect
Combined lubrication and sealing function.
Chemically inert
Stable in industrial applications.
SILITECH consultation
Application recommendation via SILITECH.

What is Paste 4 used for?

Industrial Lubrication
Universal lubrication applications.
Vacuum seal
Sealing in vacuum applications.
Corrosion protection
Protective layer on metals.
Maintenance application
Workshop and maintenance universal paste.
OEM applications
OEM industry.
Data Sheets & Safety Data Sheet
TDS and SDS in multiple languages — view or download directly.
To the documents →

Processing

1
Clean substrate
Bonding surfaces clean, dry, and grease-free. For thermal applications, degrease surfaces particularly carefully.
2
Application
Apply with brush, spatula, or paste gun — for thermal pastes, apply thinly and evenly (excess layer thickness reduces thermal conductivity).
3
Optionally dilute
For thin layers: dilute the paste in aliphatic or chlorinated solvents. For standard application, use undiluted.
4
Spreading / Pressing
For thermal bonding, join components with defined contact pressure — allow excess paste to escape.
5
Curing / Use
Pastes generally remain non-crosslinking — can be used immediately. Do not exceed typical thermal stress of 250 °C.

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 →
ConsistencyUniversal PasteThermal pasteSpecial pasteIndustrial Paste
Penetrationsee TDS280 (1/10 mm)see TDSsee TDS
Thermal conductivity.see TDS0.41 W/m·Ksee TDSsee TDS
Temperature Rangesee TDS–40 / +250 °Csee TDSsee TDS
Colorsee TDSWhitesee TDSsee TDS
Main applicationIndustrial universalThermal bonding electronicsBluesil Special ApplicationIndustrial lubricant/sealant

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).