Optimum Red RTV 12Oz. Silicone Cartridge

The Optimum Red RTV 12Oz. Silicone Cartridge by PERMATEX is an essential gasket-forming compound trusted by military armorers, law enforcement maintenance personnel, and tactical equipment builders for critical sealing applications. This silicone-based RTV (room-temperature vulcanizing) sealant is designed for use in high-stress environments where reliability and durability cannot be compromised. Whether you're sealing optic mounts, securing weapon components, or performing field repairs on tactical gear, this cartridge delivers consistent, professional-grade results in demanding operational conditions.

Formulated to cure at room temperature without mixing, PERMATEX's Optimum Red silicone creates a flexible, waterproof bond that withstands extreme temperatures, vibration, and impact shock—critical for weapons systems and load-bearing equipment. The red color aids visibility during application and curing, reducing the risk of missed seals in low-light conditions common to tactical operations. At 12 ounces per cartridge, this size provides adequate material for multiple application jobs while remaining portable for field kits, and the compound remains flexible after cure, accommodating thermal expansion and mechanical stress without cracking or separation.

This product is ideal for firearm maintenance, optic mounting prep, rail system assembly, and tactical gear repair—applications where moisture infiltration and component separation can compromise mission readiness. Law enforcement agencies and military units rely on PERMATEX sealants for both preventive maintenance and emergency field repairs, making this cartridge a standard component in armorer kits and maintenance supplies. The 12oz cartridge is compatible with standard caulking guns, ensuring quick deployment and precise application in vehicle, hangar, or field environments without specialized equipment.