Loctite LOC58775 Rtv Silicone Gasket Maker 300 Ml

Product Description

The LOCTITE LOC58775 is a high-performance RTV silicone gasket maker formulated to cure at room temperature and form a tough, resilient rubber seal. Based on the 587 blue silicone compound, this sealant delivers strong adhesion and flexibility across a wide range of trade applications. The 300 ml cartridge format is suited for high-volume service work. Once cured, the material remains pliable and resistant to mechanical shock, making it effective in environments subject to vibration, thermal cycling, or movement. HVAC technicians, plumbers, and electricians use this product for sealing, insulating, and protecting a variety of mechanical and electrical assemblies.

This sealant is used across residential and light commercial applications where a durable, flexible seal is required. Common uses include sealing ductwork joints, vents, flues, and trim penetrations in HVAC systems, as well as sealing doors, windows, and sign assemblies. The material also functions as electrical insulation around leads and terminals, and can protect components from mechanical shock in panel or equipment enclosures. It is appropriate for both new installation and maintenance work.

Key Features

• Room-temperature cure forms a tough, flexible rubber seal without heat or special equipment
• Pliable after cure — resists cracking from vibration and thermal movement
• Provides electrical insulation around leads, terminals, and connections
• Suitable for sealing ductwork, vents, flues, doors, windows, and trim
• 300 ml cartridge format reduces refill frequency on high-volume jobs
• Blue color aids visual confirmation of coverage during application

Compatibility

Designed for use in HVAC, plumbing, and electrical trade applications where a flexible RTV silicone sealant is required for sealing, bonding, or electrical insulation on metal, glass, and similar substrates.

Installation Notes

Apply to clean, dry surfaces free of oil, grease, and loose material for best adhesion. Allow full cure time before pressurizing sealed joints or energizing insulated connections. When used near gas vents or flues, verify that the product is rated for the temperatures present at the application point before installation. Follow applicable local codes, including IFGC and NEC requirements, for sealed penetrations in mechanical and electrical systems.

Technical Specifications

• Product Line: 587 Blue High Performance RTV Silicone
• Package Size: 300 ml
• Weight: 1.054 pounds
• UPC: 079340587757
• Unit of Measure: Each

Standard Information

• Brand: LOCTITE
• Manufacturer Part Number: LOC58775