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CAF 30 White

CAF 30 White

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Industrial 1K silicone sealant with high elongation at break for railway and heating appliance sealing.

Industrial 1K silicone sealant (acetic, white) with high elongation at break for railway and heating appliance seals

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  • Networking type
  • Number of components
  • consistency
  • Mixing ratio
  • UV resistance
  • Paint has hardened
  • Self-leveling
  • Electrical insulation
  • Food contact
  • Suitable for medical use
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High-temperature resistant glass white silicone CAF BLUESIL Acetoxy silicone sealant ELKEM industrial Swiss warehouse 1K silicone sealant industrial sealant

 
General Terms and Conditions.

Shipping usually within 1 to 3 business days
(availability will be confirmed after ordering)

. Express logistics. Fast and reliable within Switzerland & Europe.

Shipping from Swiss warehouse within 24 hours. Batch certificate. Invoice within 30 days (B2B). Technical support.
Shipping & Delivery

Usually 1 to 3 working days

Availability will be confirmed after order receipt.

Express logistics within Switzerland & Europe.

General Terms and Conditions →

Product data

Internal reference: 40-307.G310

HS code: 391000000

Internal reference: 40-307.G310
HS code: 391000000

CAF 30 White
CAF 30 White
CAF · Elkem Silicones · SKU 40-307.G310

CAF 30 White is an industrial 1K silicone sealant (acetic, white) with high elongation at break for railway and heating appliance seals.

The Elkem CAF range comprises one-component (1K), moisture-curing silicone sealants – ready-to-use from the cartridge, with high temperature and chemical resistance. CAF 30 White is tailored to specific industrial applications – its key properties and areas of application are listed below.

High elongation at break

CAF 30 is characterized by particularly high elongation at break — it withstands differential thermal expansion between different materials, such as glass-metal in railway vehicles or heating appliances.

CAF 30 White in numbers
White
Color
A 22
Shore hardness
6 min
Skin formation
Acetic
1K

What distinguishes CAF 30 White

High elongation at break
Absorbs large differential movements between materials with different thermal expansion rates.
Good heat resistance
Durable in hot industrial environments — furnaces, heat exchangers, boilers.
Good dielectric properties
Suitable for electrical insulation applications.
Multi-substrate adhesion
Adheres to many surfaces without primer pretreatment.
Water and moisture resistant
Permanent sealing function in humid environments.
HCR silicone adhesive
Special: Bonding of high-consistency silicone (HCR/HTV) to substrates.

What is CAF 30 White used for?

Railway vehicle seals
Sealing of the side windows in rail vehicles — withstands vibrations and temperature changes.
Heating appliance seals
Sealing of ovens, heat exchangers, steam circuits and boilers.
Industrial bonding
Structural bonding with sealing function in industrial applications.
HCR silicone bonding
Bonding of high-consistency silicones to metal and plastic substrates.
Aerospace, Automotive, Rail
Maintenance and repair in the transport industry.
Chemical and plant engineering
General maintenance in the chemical industry and plant engineering.
Data sheets & safety data sheet
Full TDS and SDS in DE, EN, FR — view or download directly.
To the documents →

processing

1
Prepare the substrate
Clean, grease-free, and dry bonding surfaces — degrease with acetone or isopropanol. On copper/zinc: avoid the acetic acid variant (corrosion).
2
Cut the cartridge tip
Cut the tip at an angle to the desired cross-section of the bead. For 310 ml cartridges: Use a standard cartridge gun.
3
Apply
Apply an even bead. For sandwich bonding, apply a thin layer to both sides and join immediately.
4
Smoothing (optional)
Smooth with a smoothing tool or moistened spatula during the skin formation time.
5
Curing
Skin formation typically takes 6–10 minutes, cross-linking reaches 2 mm in 6–8 hours, and is fully cross-linked after 24–72 hours. Cross-linking is accelerated by heat and higher humidity.

Recommended accessories

Bluesil Primer 131
Universal adhesion promoter for stainless steel, aluminum, PMMA and many metals.
View product →
Bluesil ADD 11013
Thixotropy additive for Bluesil RTV 3428 (polyaddition) — vertical application.
View product →

Important instructions

Substrate preparation
Prepare bonding surfaces to be clean, grease-free, and dry. Adhesion is not possible on PE, PP, PTFE, and silicone oils. Conduct a preliminary test for critical material pairings.
Storage & Handling
Store in the unopened original container at 5 to 30 °C in a dry place, protected from sunlight. Consult the current SDS before opening.
Corrosion warning (Acetic)
Acetic crosslinking can attack copper, zinc, and galvanized steels. For corrosion-sensitive metals, choose the neutral variant (CAF 530, CAF 731, or CAF 730).
Application advice
SILITECH will advise you on the optimal CAF variant for your application — substrate pairing, corrosion and temperature requirements, desired appearance and processing workflow.

CAF 30 White compared to related CAF products

Networking, mechanics, and temperature directly next to each other — all values ​​from the official Elkem TDS. “— " = not specified in the datasheet.

CAF 30 White
Current product		 CAF 30 Transparent →CAF 33 White →Silbione CAF 72589 →
Networking system1K Acetic1K Acetic1K Acetic1K Acetic
ColorWhiteTransparentWhiteTranslucent
Shore A hardness20202515
Elongation at break500 %500 %500 %220 %
Tensile strength2.2 MPa2.2 MPa2.5 MPa0.6 MPa
Tear resistance5.0 kN/m5.0 kN/m5.4 kN/m—
Skin formation time6 min6 min6 min—
Continuous operating temperature.+250 °C+250 °C+250 °C—
Peak temperature+250 °C+250 °C+300 °C—
Main applicationRailway vehicle sealsGlass-to-metal bondingAutomotive sealsBakery molds
Topics & Application Areas
Key terms related to this product. Also useful for our search and filters.
High-temperature resistant glass white silicone CAF BLUESIL Acetoxy silicone sealant ELKEM industrial Swiss warehouse 1K silicone sealant industrial sealant

Technical data for CAF 30 White

All 13 product information 7 Further properties 1 Physical properties 2 Electrical properties 1 Product approvals 2
Product information
brand CAF
Manufacturer Elkem Silicones
Networking type Single-component (humidity)
Number of components 1K (single-component)
consistency Thixotropic
Mixing ratio Single-component
Container 310 ml
Other features
UV resistance No
Physical properties
Paint has hardened White
Self-leveling No
Electrical properties
Electrical insulation Yes
Product approvals
Food contact No
Suitable for medical use No

For binding values, please refer to the technical data sheet (TDS) in the "Documents" tab.

Documents and datasheets

Click on a document for a preview or the download icon for a direct download.

Technical Data Sheets (TDS) 2
CAF 30 White - Technical Data Sheet EN.pdf
533 KB
CAF 30 White - Fiche Technique FR.pdf
70 KB
Safety Data Sheets (SDS) 4
CAF 30 White - Safety Data Sheet DE.pdf
312 KB
CAF 30 White - Safety Data Sheet EN.pdf
43 KB
CAF 30 White - Fiche de Sécurité FR.pdf
358 KB
CAF 30 White - Scheda di Sicurezza IT.pdf
344 KB

Frequently asked questions about CAF 30 White

Practical application and design questions — answered by SILITECH.

CAF 30 White: Industrial 1K silicone sealant (acetic, white) with high elongation at break for railway and heating equipment sealing. Main applications include railway vehicle sealing, heating equipment sealing, and industrial bonding.

Acetic cure (acetic acid crosslinking) means that the 1K system crosslinks through atmospheric moisture and releases small amounts of acetic acid during curing—recognizable by its characteristic odor. Acetic systems are established, economical industry standards with excellent adhesion to glass, ceramics, and many metals. Caution: Acetic acid can cause corrosion on copper, zinc, and electroplated steels—use a neutral variant (e.g., CAF 530, CAF 731, or CAF 730) for these materials.

CAF 30 White adheres without primer to glass, ceramics, many metals (stainless steel, aluminum, copper in neutral variants), and numerous engineering plastics. Adhesion is not possible to PE, PP, PTFE, and silicone oils—these substrates are fundamentally incompatible with silicone. If in doubt, we recommend a preliminary test or consulting SILITECH regarding the specific material pairing.

Prepare the substrate to be clean, grease-free, and dry. Apply the sealant evenly from the cartridge or container—refer to the TDS for skin formation and curing times. Store in the unopened original container at 5 to 30 °C, protected from sunlight. Use opened containers promptly—for Acetic systems, reseal tightly immediately after opening. Consult the current Safety Data Sheet (SDS) before use.

In the comparison table above, you will find related CAF products with adapted properties—different color, different crosslinking system (acetic vs. neutral), or different mechanical properties. If you are unsure about the optimal choice, we would be happy to advise you—contact SILITECH with your requirements (substrate pairing, temperature, corrosion requirements, appearance).

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Product specifications

Product information
brand CAF
Manufacturer Elkem Silicones
Networking type Single-component (humidity)
Number of components 1K (single-component)
consistency Thixotropic
Mixing ratio Single-component
Container 310 ml
Other features
UV resistance No
Physical properties
Paint has hardened White
Self-leveling No
Electrical properties
Electrical insulation Yes
Product approvals
Food contact No
Suitable for medical use No
Keywords
Keywords
High-temperature resistant glass white silicone CAF BLUESIL Acetoxy silicone sealant ELKEM industrial Swiss warehouse 1K silicone sealant industrial sealant
Mechanical properties
Shore hardness A20.0 Shore A
Modulus at 100% elongation0.6 MPa
Tensile strength2.2 MPa
Elongation at break500.0 %
Tear resistance5.0 kN/m
processing
Skin formation time6.0 min
Fully cured after 24 hours4.2 mm
Crosslinking 2 mm layer6.0 h
Physical & Thermal
Density (23°C)1.05 g/cm³
Temperature resistance (duration)-60 to 250 °C
Peak temperature (short-term)250 °C
Electrical characteristics
Dielectric constant ε (1 kHz)3.0
Dielectric strength20.0 kV/mm
Contact resistance2e+15 Ω·cm
Loss factor tan δ0.003
storage
Shelf life in original packaging24 months
Storage temperature2 to 30 °C

Documents and datasheets

Safety Data Sheets (SDS) and Technical Data Sheets (TDS) are available for download: