Loctite LOC59675 High Temp Rtv Silicone Sealant Red 300 Ml

Product Description

The LOCTITE LOC59675 is a single-component, room-temperature-vulcanizing (RTV) silicone adhesive sealant formulated for high-temperature applications. It cures at room temperature to form a flexible, tough rubber seal that resists heat, vibration, and moisture. The red color indicates a high-temp rating, making it well suited for use around flues, vents, exhaust components, and other surfaces that see elevated operating temperatures. HVAC technicians, plumbers, and general service professionals use this product for both sealing and light adhesive bonding tasks. The 300 ml cartridge is designed for standard caulking guns.

This sealant is used in residential and light commercial applications wherever a durable, heat-resistant seal is required. Typical uses include sealing ductwork joints, vents, flues, and B-vent connections, as well as protecting electrical leads from mechanical shock and providing electrical insulation. It is also applied to doors, windows, trim, and signs. The general-purpose formulation makes it a common shop staple for HVAC, plumbing, and electrical service work.

Key Features

• Single-component RTV silicone — no mixing required, cures at room temperature
• Red high-temp formulation rated for elevated heat environments including flues and exhaust components
• Forms a flexible, tough rubber seal that absorbs vibration and resists moisture
• Provides electrical insulation and protects leads from mechanical shock
• 300 ml cartridge fits standard caulking guns for controlled application
• Suitable for sealing ductwork, vents, flues, doors, windows, and trim

Compatibility

Designed as a general-purpose RTV silicone sealant for use on metal, glass, and other common construction and HVAC surfaces where a flexible, heat-resistant seal is required.

Installation Notes

This product is applied by licensed HVAC technicians, plumbers, and electricians as part of standard sealing and assembly procedures. Surfaces should be clean, dry, and free of grease or old sealant before application. Allow full cure time at room temperature before exposing the joint to heat or pressure. Work in a ventilated area and follow all manufacturer safety guidelines on the product label.

Technical Specifications

• Form Factor: 300 ml cartridge
• Type: Single-component RTV silicone adhesive sealant
• Color: Red
• Temperature Rating: High temp
• Weight: 0.871 pounds
• UPC: 079340596757

Standard Information

• Brand: LOCTITE
• Manufacturer Part Number: LOC59675