CAF 33 Transparent
Transparent 1K silicone sealant for visible joints with standard CAF-33 properties.
Transparent 1K silicone sealant (acetic) for visible joints with standard CAF-33 properties
Documents
Internal reference:
40-306.KT
HS code:
39100000
CAF 33 Transparent is a transparent 1K silicone sealant (acetic) for visible joints with standard CAF-33 properties.
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 33 Transparent is tailored to specific industrial applications – the most important properties and areas of application are listed below.
CAF 33 Transparent is the transparent variant of the CAF-33 series — proven industrial properties with an inconspicuous adhesive seam for glass connections.
What distinguishes CAF 33 Transparent
What is CAF 33 Transparent used for?
processing
Recommended accessories
Important instructions
CAF 33 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 33 Transparent Current product |
CAF 33 White → | CAF 33 Black → | CAF 30 Transparent → | |
|---|---|---|---|---|
| Networking system | 1K Acetic | 1K Acetic | 1K Acetic | 1K Acetic |
| Color | Transparent | White | Black | Transparent |
| Shore A hardness | 25 | 25 | 25 | 20 |
| Elongation at break | 500 % | 500 % | 500 % | 500 % |
| Tensile strength | 2.5 MPa | 2.5 MPa | 2.5 MPa | 2.2 MPa |
| Tear resistance | 5.4 kN/m | 5.4 kN/m | 5.4 kN/m | 5.0 kN/m |
| Skin formation time | 6 min | 6 min | 6 min | 6 min |
| Continuous operating temperature. | +250 °C | +250 °C | +250 °C | +250 °C |
| Peak temperature | +300 °C | +300 °C | +300 °C | +250 °C |
| Main application | Visible glass bonding | Automotive seals | Automotive in-situ seals | Glass-to-metal bonding |
Technical data for CAF 33 Transparent
| 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) 3
Frequently Asked Questions about CAF 33 Transparent
Practical application and design questions — answered by SILITECH.
CAF 33 Transparent: Transparent 1K silicone sealant (acetic) for visible joints with standard CAF-33 properties. Main applications include visible glass bonding, displays and indicators, and sanitary applications.
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 33 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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Our technical team will advise you personally on material selection, processing questions, and individual requirements. Quickly and competently.
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 | |
| Mechanical properties | |
|---|---|
| Shore hardness A | 25.0 Shore A |
| Modulus at 100% elongation | 0.6 MPa |
| Tensile strength | 2.5 MPa |
| Elongation at break | 500.0 % |
| Tear resistance | 5.4 kN/m |
| Compression deformation residue | 54.0 % |
| processing | |
|---|---|
| Skin formation time | 6.0 min |
| Fully cured after 24 hours | 4.3 mm |
| Crosslinking 2 mm layer | 6.0 h |
| Physical & Thermal | |
|---|---|
| Density (23°C) | 1.05 g/cm³ |
| Temperature resistance (duration) | -65 to 250 °C |
| Peak temperature (short-term) | 250 °C |
| thermal conductivity | 0.2 W/(m·K) |
| Electrical characteristics | |
|---|---|
| Dielectric constant ε (1 kHz) | 2.8 |
| Dielectric strength | 19.0 kV/mm |
| Contact resistance | 1e+14 Ω·cm |
| Loss factor tan δ | 0.002 |
| storage | |
|---|---|
| Shelf life in original packaging | 24 months |
| Storage temperature | 2 to 30 °C |
Documents and datasheets
Safety Data Sheets (SDS) and Technical Data Sheets (TDS) are available for download:
- CAF 33 Translucent - Fiche Technique FR.pdf (88 KB)
- CAF 33 Translucent - Fiche de Sécurité FR.pdf (358 KB)
- CAF 33 Translucent - Safety Data Sheet EN.pdf (395 KB)
- CAF 33 Translucent - Scheda di Sicurezza IT.pdf (345 KB)
- CAF 33 Translucent - Safety Data Sheet DE.pdf (311 KB)
- CAF 33 Translucent - Technical Data Sheet EN.pdf (705 KB)
- CAF 33 Translucent - Technical Data Sheet DE.pdf (215 KB)