Momentive™ RTV157 Gray High Strain Silicone Electrical Sealant – 2.8 oz Tube
RTV157 by Momentive Performance Materials is a professional-grade high strain silicone electrical sealant available in 2.8 oz Tube format. It is designed for use on Electrical Connectors, Metal, Plastic surfaces, delivering long-lasting adhesion, flexibility, and environmental resistance across a wide range of industrial, commercial, and specialized applications. Gray in color, this product is trusted by maintenance professionals, OEM manufacturers, and engineers worldwide who demand consistent, specification-grade silicone performance in every application.
| Attribute | Detail |
|---|---|
| Manufacturer Part Number (MPN) | 9367 |
| Brand | Momentive Performance Materials |
| Product / Model Name | RTV157 |
| Color | Gray |
| Package Size | 2.8 oz Tube |
| Product Type | High Strain Silicone Electrical Sealant |
| Specification | N/A |
| Compatible Substrates | Electrical Connectors, Metal, Plastic |
Technical Information
Momentive RTV157 is a one-part, moisture-cure high-strain silicone electrical sealant formulated to provide superior flexibility and adhesion in dynamic environments subject to vibration, thermal cycling, and mechanical flexing. Its high-elongation silicone polymer resists tearing and cracking under continuous movement, making it the preferred choice for sealing military and aerospace-grade electrical connectors, wire harness terminations, and sensor housings. The gray color meets the visual identification requirements of many aerospace and defense maintenance specifications. RTV157 provides excellent dielectric insulation and moisture exclusion to maintain electrical integrity of sealed connections in harsh field conditions.
Why Choose RTV157?
- ✅ High Elongation Formula — Resists cracking under vibration and mechanical flexing
- ✅ Aerospace & Defense Grade — Meets visual and performance requirements for mil-spec connector sealing
- ✅ Superior Dielectric Properties — Maintains electrical insulation in sealed connections
- ✅ Gray Color — Standard identification color for electrical-grade silicone sealants
- ✅ Moisture & Vibration Proof — Protects connectors in harsh environmental and field conditions
Frequently Asked Questions
Q: What is Momentive RTV157 used for?
A: Momentive RTV157 is a high-strain, one-part RTV silicone sealant for sealing electrical connectors, wire harnesses, and electronic assemblies in high-flex, vibration, and thermally cycling environments such as automotive and aerospace.
Q: What is the MPN for Momentive RTV157?
A: The Manufacturer Part Number (MPN) is 9367.
Q: Why is RTV157 called a high-strain sealant?
A: RTV157 is formulated with a high elongation silicone rubber that can withstand greater mechanical movement and flex without cracking or losing adhesion — critical for electrical sealing in dynamic environments.
Q: What color is Momentive RTV157?
A: RTV157 cures to a gray color, typical for electrical-grade silicone sealants used in aerospace and military connector sealing.
Q: Is Momentive RTV157 UL recognized?
A: Momentive RTV silicone products are generally developed for electronics and electrical applications with relevant certifications. Refer to the current Momentive RTV157 product datasheet for up-to-date listing status.
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