Product Introduction
Momentive SNAPSIL™ RTV5243 is a high-strength, one-component silicone sealant engineered for rapid curing and reliable adhesion across metals, plastics, and painted surfaces. Featuring a neutral-cure, low-odor formulation with excellent hydrolytic stability, RTV5243 is ideal for applications requiring long-term performance in moist or harsh environments. It provides fast green strength development and superior electrical insulation, supporting high-efficiency industrial and electronic assembly processes.
SNAPSIL™ RTV5243 Features
- Fast-curing, one-component alkoxy neutral-cure silicone
- High adhesion strength to metals, plastics, and painted substrates
- Rapid green strength development for increased productivity
- Non-corrosive curing suitable for electronics
- Excellent hydrolytic stability after extended water exposure
- Outstanding electrical insulation and dielectric performance
- Resistance to chemicals, ozone, moisture, and weathering
- UL recognized component – File E-36952
- Retains elastomeric performance from -75°F to 400°F
- Durable mechanical tear resistance
SNAPSIL™ RTV5243 Applications
- Automotive, aerospace, appliance, and electronics bonding
- Moisture-prone sealing applications needing long-term reliability
- Semiconductor, PCB, and copper conductor protection
- Industrial workflows requiring rapid cure and early handling strength
- Multi-material assemblies without primer use
- Electrical insulation tasks in harsh environments
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 Options | White (RTV5242), Black (RTV5243), Gray (RTV5249) |
| 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 |
