Momentive and TECHSiL have enjoyed a successful working partnership since TECHSiL were appointed as a key distributor in 1990. Qualifying for A1 status for 4 years in a row from 2018 to 2022, and once again officially accredited as Momentive Performance Materials A1 Distributor in 2025.
Enabling Solutions for a Sustainable World™
WHO IS MOMENTIVE?
Momentive is a global leader in advanced, high-performance silicones for a wide range of industries including aerospace, automotive, and electronics. With a commitment to innovation, they aim to create solutions which improve quality of life and enable a more sustainable future. With over 80 years in research, development, and production, Momentive have a proud legacy of pioneering some of the first-ever silicone processes and products.
Momentive is part of a legacy that was first to make silicone adhesives available commercially, and it continues today expanding its line of RTV silicones, silicone-based pressure sensitive adhesives and adhesive formulations.
WHY USE MOMENTIVE SILICONES?
Momentive’s advanced silicone solutions are globally recognised, offering durability and reliability in extreme environments. Their product range includes low outgassing solutions, fuel and solvent resistance, sustained flexibility, electrical insulation, thermal protection, protective seals, and lots more.
AUTHORISED MOMENTIVE RE-PACKERS
TECHSiL are an authorised re-packer for Momentive materials. We offer modern re-packing and material handling capabilities able to supply product in a format to meet your exact dispensing requirements from syringe to cartridge, tub to pail.
TECHSiL is the ONLY approved Momentive distributor in the UK and Europe for RTVs and the LARGEST EUROPEAN DISTRIBUTOR of Momentive RTVs.
BROWSE MOMENTIVE APPLICATIONS OR GET EXPERT ADVICE
Find out more about the Industry Applications of Momentive products, or Let us help you find the ideal product for your needs no matter what the application.
EXPERT ADVICE
BOOK A COMPLIMENTARY CONSULTATION with one of our experts to help find the perfect products for your needs.
technical@techsil.co.uk | +44 (0) 1789 774 244
Specialty Formulated Materials Trusted in Some of the World’s Most Difficult Applications
WHAT INDUSTRIES USE MOMENTIVE PRODUCTS?
Momentive's silicones have been an integral part of the aerospace industry for more than 60 years, being vital to the assembly and operation of aircraft, spacecraft, and military platforms.
From window seals on the Apollo capsules to the soles on Neil Armstrongs boots, Momentive helped the Apollo program and every US manned space flight since, delivering innovative low outgassing, thermally insulating, and extreme temperature resistant RTV silicones, helping today's pioneers reach even greater heights.
Momentive Silicones Offer:
- Long term stability over extreme temperatures
- Sustained flexibility
- Protection from dust, moisture, and humidity
- Fuel and solvent resistance
- Electrical insulation
- Thermal protection for sensors and launch structures
- Low outgassing solutions
Read More About Momentive and Aerospace:
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Silicone RTVs in Aerospace & Aviation |
Low Outgassing Brochures |
Momentive’s high performance materials help to redefine what is possible in appliance manufacturing whether safeguarding appliances from bumps and vibrations, PCB protection, or thermal management. With products including thermally conductive greases, heat resistant adhesives, conformal coatings, and transparent potting materials, Momentive’s silicone materials aim to improve reliability, performance of appliances, and enable design flexibility.
Silicone Solutions for Appliances:
- Thermal management
- Heat resistant adhesives and sealants
- Conformal coatings
- Room temperature cure sealants
- Transparent potting materials
Read TECHSiL's Guides to Appliance Applications:
High Stress, Load Bearing Parts
Momentive develop advanced silicones for the most demanding challenges in the automotive industry, from making cars lighter, more durable and environmentally friendly, to battery solutions. Their silicones provide thermal management solutions, ideal for extreme environments, maintaining flexibility and strength in both high and low temperatures.
As the automotive industry evolves new solutions are needed for electric vehicles including cable and charging system solutions. Momentive’s advanced material solutions play an essential role in the vehicles of today and tomorrow.
Momentive Materials Offer:
- High thermal stability
- Low viscosity
- Fast cure and self-bonding
- Easy to colour
- Thermal conductivity
- Excellent electrically insulating properties
- Dielectric strength
We understand the unique challenges of the defence industry, with equipment needing to function in all conditions, a variety of extreme environments, and be incredibly reliable.
Momentive sealants, adhesives, potting compounds, and thermal management solutions help to maintain structural integrity, protect sensitive components and dampen shock/vibration no matter the weather or environment.
Many of our Momentive products have military specifications, Ul recognition, and NSN codes. For more information about which Momentive products are suitable for defence applications, contact our Technical Team.
Potentional Applications & Benefits:
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Military Spec Momentive Products Include:
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As systems become smaller and circuit densities become greater, advanced solutions are needed to enable the next generation of electronics.
From electronic potting silicones and encapsulation products, to adhesives, additives, hard coats and packaging, Momentive offers silicone sealants and fast cure silicone adhesives for high productivity assembly and solutions for electronic components that can allow design flexibility and help provide long term component reliability under harsh operating conditions.
Read more about Momentive's solutions for electronic applications, or contact our Technical Team for personalised advice.
MOMENTIVE BRANDS & PRODUCTS
Encapsulants & Silicone Gels
Momentive's silicone gels and encapsulants offer high performance, with increased miniaturisation capabilities and long-term dependability for potting, bonding and sealing applications. Designed to protect, isolate and embed delicate electronic components.
Ideal for electronics, LED and lighting, appliances, and more.
Adhesives & Sealants
Momentive’s silicone based adhesives offer excellent adhesion and strength. The range includes RTV silicones, valued for their electrical and thermal conductivity, heat resistance and adhesion to plastic and metal substrates, are ideal for industrial sealing applications subject to extreme temperatures and chemical exposure.
Used across automotive, aerospace, and electronics.
Thermal Gap Fillers
High-performance thermally conductive silicone gap fillers which are dispensed to fill air gaps and voids in electronic components. These non-adhesive curing silicones form a soft stress absorbing interface, which improves cooling by working with heat sinks to dissipate heat from critical electronic parts.
Designed for the automotive, electronics, and household appliance industries.
Conformal Coatings
Momentive's range of silicone conformal coating materials are fast curing and flame retardant, with corrosion resistance. These coatings employ a distinct formulation that helps to prevent the occurrence of corrosion on vital PCB components and surfaces.
Designed for the electronics industry. Find out more about Momentive Conformal Coatings in our resource centre.
Snapsil™ Electronics Bonding
Enable electronics and electrical component manufacturers to optimise production speed and adhesion quality without exposing sensitive components to potentially damaging heat-cure processing. These room-temperature, condensation-cure adhesives form a strong bond to most substrates, including metals, polymer resins and glass.
SilCool™ Thermal Management
Thermal interface materials, characterised by excellent thermal conductivity and consistent, long term heat transfer performance. This range includes grease compounds, adhesives, encapsulants, and potting comounds. Excellent candidates for electronic and other applications where thermal management and high heat transfer are critical.
SilGrip™ Pressure Sensitive Adhesives
This range of silicone pressure sensitive adhesives (PSA) from Momentive Performance Materials which adhere to a wide variety of surfaces, are generally reliable over a broad temperature range, and typically thoughtfully balance tack and peel properties depending on the application.
Addisil™ Heat Cure Bonding
Excellent where industries require high quality heat cured rubber products. These offer high mechanical performance, a broad range of durometers, and one component ready to use options. Addisil™ materials utilise a platinum catalyst, which may be desirable in applications where regulatory compliance, transparency and mechanical performance are important.
Siltrust™ Encapsulants & Coatings
This full line of encapsulants, adhesives, sealants and potting materials is engineered to endure the harsh environments in which solar panels operate, while generally improving the light-to-electricity conversion yield. Offering stability under extreme humidity, temperature and ultraviolet-radiation conditions.
INVISISIL™ Optical Bonding
Offering both the optical clarity and protection required by advanced optical applications, including LED lighting materials. Delivering high optical stability and light transmittance, INVISISIL products can also contribute to the durability and reliability of devices through their long term resistance to yellowing or delamination.
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Momentive RTV108 FDA Silicone 82.8ml (MIL-A-46106B)£9.16 ex VAT £10.99inc VAT From £8.24 ex VAT £9.89inc VAT -
Momentive RTV108 FDA Silicone 310ml (MIL-A-46106B)£19.18 ex VAT £23.02inc VAT From £16.40 ex VAT £19.68inc VAT -
Momentive RTV109 FDA Silicone 310ml (MIL-A-46106B)£16.94 ex VAT £20.33inc VAT From £16.10 ex VAT £19.32inc VAT -
Momentive RTV103 FDA Silicone 82.8ml (MIL-A-46106B)£9.16 ex VAT £10.99inc VAT From £8.24 ex VAT £9.89inc VAT -
Momentive RTV103 FDA Silicone 310ml (MIL-A-46106B)£18.73 ex VAT £22.48inc VAT From £17.79 ex VAT £21.35inc VAT -
Momentive RTV102 FDA Silicone 82.8ml (MIL-A-46106B)£9.20 ex VAT £11.04inc VAT From £8.21 ex VAT £9.85inc VAT -
Momentive TSE399 Clear Flowable Air Syringe 30cc£15.21 ex VAT £18.25inc VAT -
Momentive RTV106 FDA Silicone 310ml (MIL-A-46106B)£56.14 ex VAT £67.37inc VAT From £44.91 ex VAT £53.89inc VAT -
Momentive TSE397 Clear Semi-Flowable Silicone 86g£21.17 ex VAT £25.40inc VAT From £17.27 ex VAT £20.72inc VAT -
Momentive RTV133 Black Electrical Silicone 383gm£71.57 ex VAT £85.88inc VAT From £64.58 ex VAT £77.50inc VAT -
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Momentive SilCool* TIA208R Thermally Conductive Potting Silicone 3kg£112.06 ex VAT £134.47inc VAT -
Momentive TSE3280 G Thermally Conductive Silicone 330gm£144.45 ex VAT £173.34inc VAT -
Momentive TSE3280 G Thermally Conductive Silicone 2kg£698.85 ex VAT £838.62inc VAT
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Momentive TSE326 High Temp Silicone Adhesive 333ml£76.52 ex VAT £91.82inc VAT -
Momentive TSE326 High Temp Silicone Adhesive 140gm£46.65 ex VAT £55.98inc VAT
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Momentive RTV103 Black FDA Silicone Adhesive 30cc£9.59 ex VAT £11.51inc VAT -
Momentive XE11-B5320 Thermally Conductive Paste 333ml£124.59 ex VAT £149.51inc VAT -
Momentive RTV133 Black Silicone 30cc Syringe (Manual)£13.27 ex VAT £15.92inc VAT
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Momentive TSE3941 Flame Retardant Silicone 310ml£98.00 ex VAT £117.60inc VAT
SILICONE RTVs
SILICONE SUITABLE MATERIALS:
Momentive silicone-based adhesives are suitable for bonding to glass, wood, natural and synthetic fibre, painted surfaces, and many metals and plastics. Their RTVs can adhere to plastic and metal substrates, while their pressure sensitive adhesives (PSAs) are suitable for low surface energy materials amongst others.
WHAT ARE SILICONE RTVs?
RTV stands for room temperature vulcanising, silicone RTVs are silicone rubbers which will cure at room temperature, without the addition of heat. They are often used in the electronics industry and for bonding, sealing and encapsulation applications.
TYPICAL APPLICATIONS:
Some of the typical applications for Momentive silicone products
- ECUs and PCBs
- Seals and gaskets
- Potting and encapsulation
- Thermal management
- Battery solutions
- Sensor coatings
- Instrument panels and navigation screens
WHY USE SILICONE RTVs?
Some of the key benefits of using silicone RTVs include
- Long term stability over a range of extreme temperatures
- Sustained flexibility, adhesion and sealing
- Outstanding weather resistance
- Ability to withstand fuels and solvents
- Excellent electrical insulation properties
- Deep section cure
- Customisable curing
Common Silicone FAQs
The one-part silicones are designed to stick so it depends on what cure temperature you want to use (less than 100C, you should look at moisture cure). The other major factor is the materials to be bonded. PTFE, Polypropylene, Polyethylene or POM (polyacetal) are very difficult to bond too. Everything else is normally possible without a primer.
Additionally, PSAs (Pressure Sensitive Adhesives) will bond silicone to itself and other materials like a contact adhesive with instant tack. They are particularly good for lamination and sheets.
Contact our Technical Team for more personalised advice for your specific substrate.
It depends on the application, but silicone offers some unique properties.
- High and Low Temperature – silicone is resistant to long term exposure and remains elastic
- Resists Ultraviolet light (UV), Ozone, and weathering for long term exterior use.
- Generally safe to use and, when approved, is found in food contact and medical applications.
- Can be made, by design, to stick or release from most substrates as an adhesive or mould maker.
Thermal Resistance describes the thermal properties of a material and how it resists heat at a specific thickness. Thermal resistance is proportional to the thickness of the material, but it can be affected by gaps that occur between contact surfaces.
A mould release such as petroleum jelly or Teflon (PTFE) based are good. Contact our Team for more advice.
No. Paint first, then apply silicone.
This depends on the application, most times try and mechanically remove most of it. If the substrates allow (plastics are sensitive), try solvents like Cyclohexane. We also offer SilstripNHLO - a Silicone Digester that eats silicone but is not harmful too many other materials.
Yes, we carry a range of pigments. Please contact us for more information or view our range of pigments.
MOMENTIVE RESOURCES
Visit our Resource Centre and discover a comprehensive collection of articles and resources about Momentive products, and related applications and industries. Here you can find indepth looks at product ranges, as well as technical guides to thermal management, optical bonding, and conductive silicones.
Low Outgassing
RTV100 Series
Thermal Protection
RTV630
Silicones for Aerospace
RTV157 & RTV159
MOMENTIVE VIDEOS
WHY CHOOSE TECHSiL?
We are not simply a warehouse and distribution operation; we have earned an enviable reputation in customer care and service
For over 30 years, TECHSiL has supplied high performance materials across industries from our offices in the UK, offering adhesives, silicones, tapes, lubricants, O-rings and related products. With a dedicated team of internal and external sales and customer service professionals, we work together with our customers and suppliers to find the best product solution for your application.
- Dependable OTIF Delivery
- Repacking Capabilities
- Highest RTV Stockholding
- ISO9001:2015 Approval
- Boeing/Airbus/OEM Approvals
- Bespoke Packaging Options
- Dedicated Customer Service
- JOSCAR Registered
- Stock Management Solutions
- Proven Technical Expertise
- AS9120 Quality Assurance
- NSN/MIL Spec Approvals
Do you have an enquiry?
Reach out to our Team for expert assistance.
technical@techsil.co.uk | +44 (0) 1789 774 244