Product Introduction
Momentive SNAPSIL™ RTV5249 is a high-strength, electronic-grade silicone sealant formulated for rapid curing, superior moisture resistance, and durable adhesion across metals, plastics, and painted surfaces. As part of the RTV5240 series, RTV5249 features exceptional hydrolytic stability and non-corrosive curing properties, making it ideal for sensitive electronic components. Its strong environmental resistance, excellent electrical insulation, and fast green strength buildup support efficient and reliable industrial assembly processes.
SNAPSIL™ RTV5249 Features
- One-component, high-strength alkoxy neutral-cure silicone
- Cures up to four times faster than traditional alkoxy formulations
- Excellent adhesion to metals, plastics, and coated surfaces
- Superior moisture and hydrolytic stability during long-term exposure
- Non-corrosive curing compatible with electronics
- Outstanding electrical insulation properties
- Strong resistance to chemicals, ozone, and weathering
- Low odor and easy to dispense
- UL recognized component – File E-36952
- Retains elastomeric performance from -75°F to 400°F
SNAPSIL™ RTV5249 Applications
- Automotive, aerospace, appliance, and electronics manufacturing
- Moisture-intensive environments requiring durable sealing
- Electronic assemblies, semiconductors, and PCB protection
- Bonding multi-substrate components without primer
- High-speed production requiring rapid cure and handling strength
- Electrical insulation applications requiring high dielectric stability
About Prostech
Prostech offers specialty materials (adhesives, tapes, thermal interface materials, insulating materials, sealants, PCB protection materials, …) along with manufacturing solutions. We proudly serve a wide range of industries and are an authorized distributor for leading global manufacturers of industrial materials and equipment. Our product range is designed to deliver customized solutions that address each customer’s unique needs.
With years of experience and a successful project history, we are confident in our ability to provide comprehensive material solutions. These solutions effectively tackle the challenges manufacturers face. To explore our full product catalog, simply click here. Our dedicated team is ready to assist with:
- Provide quotation, sample, TDS/MSDS, and technical consultation
- Testing sample quality and verifying product compatibility in our laboratory
- Customizing material formulas for special applications
- Adapting product sizes, quantities, and packaging to meet specific needs
- Offering expert advice on suitable equipment and automation processes
- Delivering technical training and on-site support for optimal product use
Moreover, Prostech ensures the safe and accurate global delivery of all materials, including “dangerous goods”, in compliance with legal regulations. For personalized technical support or to receive a quotation, please contact us today.
| Property | Value |
|---|---|
| Color | Gray (also White & Black variants in series) |
| Hardness (Shore A) | 40 |
| Tensile Strength | 2.2 MPa (320 psi) |
| Elongation | 425% |
| Specific Gravity | 1.5 |
| Application Rate | 300 g/min |
| Sag/Slump | 2.5 mm (0.1 in) |
| Tack-Free Time | 45 min |
| Tooling / Skin-Over Time | 10 min |
| Cure Time (3.2 mm depth) | 6 hours |
| Dielectric Strength | 20 kV/mm (500 V/mil) |
| Dielectric Constant @ 60 Hz | 2.8 |
| Dissipation Factor @ 60 Hz | 0.001 |
| Volume Resistivity | 3×10¹⁵ ohm·cm |
| Temperature Range | -75 to 400 °F |
| Packaging – Cartridge | 0.48 kg (1.06 lb), 0.30 L |
| Packaging – 5 Gallon Pail | 27.2 kg (60 lb), 18.1 L |
| Packaging – 55 Gallon Drum | 244.9 kg (540 lb), 162.8 L |
