Silicones, silicone oils, sprays
Casting and potting resins
Elkem Silicones.
Bluesil, Silbione and CAF: RTV silicones, silicone pastes, primers and sealants from Elkem Silicones. SILITECH delivers from stock in Gümligen and provides support with selection, data sheets and alternatives.
About the Brand
Elkem & its brands
Elkem Silicones is a fully integrated silicone manufacturer with over 70 years of experience: from the raw material base silicon to the finished silicone product. With research and production sites in Europe, North and South America, and the Asia-Pacific region, Elkem develops silicones for industry, electronics, construction, transportation, and healthcare. SILITECH carries Elkem silicones of the brands Bluesil, Silbione, and CAF in its range and supports you in material selection, technical classification, and alternatives. Standard products are generally available for short-term delivery from our warehouse in Gümligen; we provide technical data sheets (TDS) and safety data sheets (SDS) as a basis for your decision-making.
Brands of the group
Bluesil, Silbione and CAF
Bluesil
Industry
Elkem's main industrial brand for RTV-1 and RTV-2 silicones, silicone oils, pastes, primers, and specialty products. Proven in mechanical engineering, electronics, tool and mold making, and coating technology.
Silbione
Healthcare & Personal Care
High-purity silicones for healthcare and personal care markets. We clarify suitable types and specifications on a project basis using the manufacturer's documentation; upon request, we will obtain certificates for you.
CAF
Adhesives & Sealants
Historic Elkem brand for one-component RTV silicone sealants, proven since 1958. Acetate, neutral and alkoxy-crosslinking systems for sealing, bonding and protecting.
Product range
Elkem Product Range
The Bluesil, Silbione, and CAF portfolio at a glance: from RTV silicones to pastes and primers to potting compounds. We support you with selection, data sheets, and alternatives.
RTV Silicones
Bluesil RTV-1 and RTV-2: cold-curing silicone elastomers for molding, potting, and sealing. Selection is based on Shore hardness, tear strength, viscosity, pot life, and curing system.
To the rangeSilicone Pastes & Greases
Bluesil Paste & Grease: Thermal pastes, lubricants, dielectric pastes, and release agents for fittings, seals, and O-rings. Temperature and media resistance depending on type, as per the data sheet.
To the rangePrimer & Additives
Bluesil Primer for reliable adhesion on difficult substrates, plus inhibitors, accelerators, thinners, and catalysts for targeted property adjustment. Testing on the original substrate is recommended.
To the rangeEncapsulation & Potting Compounds
Bluesil ESA: Two-component silicone gels and elastomers for potting and encapsulation in electronics, sensors, and LEDs. Depending on type, transparent, with dielectric properties as per the data sheet.
To the rangeHealthcare & Personal Care
Silbione: high-purity silicones for healthcare and personal care applications. Available types, specifications, and certifications are clarified on a project-specific basis using the manufacturer's documentation.
To the rangeSpecialties & Antifoam
Silcolapse defoamers, release agents, and other Elkem specialties for paper, chemicals, crop protection, and industrial processes. We will clarify the type and dosage based on your process requirements.
To the rangeOur Elkem Products.
FAQ
Frequently Asked Questions about Elkem Silicones
What is the difference between Bluesil and Silbione?
Bluesil is Elkem's industrial brand for RTV-1 and RTV-2 silicones, silicone oils, pastes, primers, and specialties in mechanical engineering, electronics, tool and mold making. Silbione is Elkem's product line for high-purity silicones in healthcare and personal care markets. We will inform you on request which specifications and certifications are available for each type.
Which Elkem products are available from Swiss warehouse?
Common Bluesil RTV silicones (such as RTV 141, RTV 3428, RTV 3450), Bluesil Paste 4, as well as CAF 33 and CAF 4, are generally available for short-term delivery from our warehouse in Gümligen near Bern. We also stock selected Silbione grades in Gümligen; special sizes, additional Silbione types, and ESA potting compounds are sourced upon request. Availability and delivery time will be confirmed during order review.
Are Silbione silicones suitable for medical applications?
Silbione is Elkem's product line of high-purity silicones for healthcare applications. Whether a specific Silbione type is suitable for your application and which specifications and certifications are available, we clarify on a project-specific basis using the manufacturer's documentation. Upon request, we will obtain certificates and technical dossiers from the manufacturer for you. For medical projects, please contact our team directly.
What are CAF sealants and what are they suitable for?
CAF (Caoutchouc Auto-vulcanisable à Froid) is Elkems historical brand for one-component RTV silicone sealants. CAF 33 (acetoxy-curing) and CAF 4 (neutral-curing) cover sealing, bonding, and protective applications in vehicle construction, apparatus engineering, electrical engineering, and structural construction. The temperature resistance ranges from approximately -50 to +180 degrees Celsius depending on the type; the specifications in the technical data sheet are authoritative.
Which Bluesil RTV-2 silicones are suitable for mold making?
For classic mold making, addition-curing Bluesil RTV-2 types such as RTV 3428 (approx. Shore A 25, all-round type) or RTV 3450 (approx. Shore A 50, abrasion-resistant) are suitable, with values according to the technical data sheet. For food contact applications, types such as RTV 3325 may be considered depending on the regulatory framework, with evidence according to the manufacturer's documentation. The selection depends on the level of detail, Shore hardness, pot life, and expected service life of the mold; the technical data sheet is decisive.
Where can I obtain technical data sheets (TDS) and safety data sheets (SDS)?
Technical Data Sheets (TDS) are typically available directly on the respective product page in the SILITECH shop. Safety Data Sheets (SDS) are available upon request via our contact form or directly from your SILITECH representative. Many documents are available in German, French, and English.
Contact
Questions about Elkem silicones?
Describe the application, substrate, and requirements to us. We will review suitable Elkem types, technical data sheets, alternatives, and availability from our Gümligen warehouse.