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CAF 30 Transparent

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Transparent 1K silicone sealant (acetic) for visible sealing joints with high elongation at break

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High-temperature resistant glass transparent silicone CAF BLUESIL Acetoxy silicone sealant ELKEM industrial Swiss warehouse 1K silicone sealant translucent 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: 40-320.KT

HS code: 39100000

Internal reference: 40-320.KT
HS code: 39100000

CAF 30 Transparent
CAF 30 Transparent
CAF · Elkem Silicones · SKU 40-320.KT

CAF 30 Transparent is a transparent 1K silicone sealant (acetic) for visible sealing joints with high elongation at break.

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 Transparent is tailored to specific industrial applications – the most important properties and areas of application are listed below.

Transparent + high elongation at break

CAF 30 Transparent combines the high elongation of the CAF-30 series with transparent optics — ideal for glass-to-metal joints where the adhesive seam should remain visible but be inconspicuous.

CAF 30 Transparent in Numbers
Transparent
Color
A 22
Shore hardness
6 min
Skin formation
Acetic
1K

What distinguishes CAF 30 Transparent

Transparent optics
Inconspicuous adhesive seam for visible connections — glass applications, display components.
High elongation at break
Absorbs differential thermal expansion between substrates without cracking.
Water and moisture resistant
Permanent sealing function even in humid environments.
Good heat resistance
Industrial temperature range for heating and heat applications.
Multi-substrate adhesion
Adheres to glass, metal and many plastics.
Good dielectric properties
Suitable for electronics and insulation applications.

What is CAF 30 Transparent used for?

Glass-to-metal bonding
Visible connections with inconspicuous adhesive seams in industrial and equipment manufacturing.
Display bonding
Component bonding in display panels and display applications.
Railway vehicle glazing
Side window seal with transparent adhesive seam.
Aquarium and water engineering
Sealing of glass surfaces in water-bearing containers.
Visually appealing glazing
Glazing in construction and industry with visibility requirements.
Shop windows and display cases
Glass bonding in shop windows, display cases and exhibition furniture.
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 Transparent 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 Transparent
Current product		 CAF 30 White →CAF 33 White →CAF 33 Black →
Networking system1K Acetic1K Acetic1K Acetic1K Acetic
ColorTransparentWhiteWhiteBlack
Shore A hardness20202525
Elongation at break500 %500 %500 %500 %
Tensile strength2.2 MPa2.2 MPa2.5 MPa2.5 MPa
Tear resistance5.0 kN/m5.0 kN/m5.4 kN/m5.4 kN/m
Skin formation time6 min6 min6 min6 min
Continuous operating temperature.+250 °C+250 °C+250 °C+250 °C
Peak temperature+250 °C+250 °C+300 °C+300 °C
Main applicationGlass-to-metal bondingRailway vehicle sealsAutomotive sealsAutomotive in-situ seals
Topics & Application Areas
Key terms related to this product. Also useful for our search and filters.
High-temperature resistant glass transparent silicone CAF BLUESIL Acetoxy silicone sealant ELKEM industrial Swiss warehouse 1K silicone sealant translucent industrial sealant

Technical data for CAF 30 Transparent

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 Transparent
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 Translucent - Technical Data Sheet EN.pdf
533 KB
CAF 30 Translucent - Fiche Technique FR.pdf
70 KB
Safety Data Sheets (SDS) 4
CAF 30 Translucent - Safety Data Sheet DE.pdf
311 KB
CAF 30 Translucent - Safety Data Sheet EN.pdf
149 KB
CAF 30 Translucent - Fiche de Sécurité FR.pdf
358 KB
CAF 30 Translucent - Scheda di Sicurezza IT.pdf
345 KB

Frequently asked questions about CAF 30 Transparent

Practical application and design questions — answered by SILITECH.

CAF 30 Transparent: Transparent 1K silicone sealant (acetic) for visible sealing joints with high elongation at break. Main applications include glass-to-metal bonding, display bonding, and railway vehicle glazing.

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 Transparent 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 Transparent
Self-leveling No
Electrical properties
Electrical insulation Yes
Product approvals
Food contact No
Suitable for medical use No
Keywords
Keywords
High-temperature resistant glass transparent silicone CAF BLUESIL Acetoxy silicone sealant ELKEM industrial Swiss warehouse 1K silicone sealant translucent 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: