Momentive™ RTV159 Red High Strain Silicone Electrical Sealant – 2.8 oz Tube

RTV159 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, Wire Harnesses, Metal surfaces, delivering long-lasting adhesion, flexibility, and environmental resistance across a wide range of industrial, commercial, and specialized applications. Red in color, this product is trusted by maintenance professionals, OEM manufacturers, and engineers worldwide who demand consistent, specification-grade silicone performance in every application.

Technical Information

Momentive RTV159 Red is a one-part, moisture-cure high-strain silicone electrical sealant formulated for sealing electrical connectors and wire harness terminations in demanding aerospace, military, and automotive environments. Like RTV157, it utilizes a high-elongation silicone polymer that maintains flexibility and adhesion under continuous vibration, thermal cycling, and mechanical flexing. The red color distinguishes it from gray RTV157 for applications where different-colored sealants are specified for identification or traceability in multi-connector assemblies. RTV159 provides the same class-leading dielectric performance and moisture exclusion as RTV157 in a red color formulation.

Why Choose RTV159?

• ✅ High-Strain Silicone — Maintains flexibility under vibration and mechanical movement
• ✅ Red Color for ID — Distinguishable from gray RTV157 for multi-connector assemblies
• ✅ Aerospace & Mil-Spec — Used in defense and aerospace electrical connector sealing
• ✅ Superior Moisture Exclusion — Protects connections from humidity and fluid ingress
• ✅ Excellent Dielectric Properties — Reliable electrical insulation for sealed terminations

Frequently Asked Questions

Q: What is Momentive RTV159 Red used for?
A: Momentive RTV159 Red is a high-strain, one-part RTV silicone electrical sealant for sealing electrical connectors, wire harnesses, and terminations in aerospace, military, and automotive applications.

Q: What is the MPN for Momentive RTV159 Red 2.8 oz?
A: The Manufacturer Part Number (MPN) is 9371.

Q: What is the difference between RTV157 Gray and RTV159 Red?
A: Both RTV157 and RTV159 are high-strain electrical sealants from Momentive. The primary difference is color — gray for RTV157 and red for RTV159 — which may be specified by different OEMs or maintenance procedures.

Q: What makes RTV159 suitable for electrical applications?
A: RTV159 offers excellent dielectric properties, high elongation for flexibility under vibration, strong adhesion to connector materials, and resistance to moisture ingress.

Q: Is Momentive RTV159 compatible with MIL-spec electrical connectors?
A: Momentive RTV high-strain silicone sealants are widely used in military and aerospace connector sealing. Consult the current product datasheet and applicable technical orders for specific MIL-spec suitability.