Loctite LOC743913 Instant Gasket Sealant Silicone 190ml

Product Description

The LOCTITE LOC743913 is a silicone-based instant gasket sealant supplied in a 190ml cartridge. It forms a flexible, durable seal on mating surfaces, filling minor surface irregularities to prevent leaks from fluids, gases, and vibration. Technicians use it to create formed-in-place gaskets on flanges, housings, and covers where a cut gasket is not available or practical. The silicone formulation resists moisture and temperature cycling, making it suited for mechanical and HVAC assemblies that see frequent thermal expansion and contraction. Licensed mechanics, HVAC technicians, and plumbers are the primary installers.

This sealant is commonly applied in residential and commercial settings on engine covers, pump housings, gear cases, HVAC equipment panels, and similar metal-to-metal flange joints. It is used wherever a field-formed gasket is needed and a pre-cut gasket is unavailable. The 190ml size is appropriate for repeated service use across multiple jobs. It is sold in a minimum quantity of 6 units per order.

Key Features

• Silicone-based formulation provides flexibility and resistance to temperature cycling
• Forms in-place gaskets on metal flanges, covers, and housings
• 190ml cartridge size supports multiple field applications per unit
• Seals against fluids, gases, and vibration-induced leakage
• Suitable for use across HVAC, plumbing, and mechanical assembly applications

Compatibility

Designed as an OEM-style formed-in-place gasket sealant for use on metal-to-metal flange joints in HVAC, plumbing, and general mechanical assemblies.

Installation Notes

Application is typically performed by licensed HVAC technicians, plumbers, or mechanical technicians. Mating surfaces must be clean, dry, and free of old gasket material or grease before applying sealant. Power down equipment and relieve any system pressure before disassembling flanged joints. Allow adequate cure time before returning the assembly to service, following the sealant manufacturer guidance on the product packaging.

Technical Specifications

• Volume: 190ml
• Weight: 0.783 pounds
• Formulation: Silicone
• Unit of Measure: Each
• Minimum Order Quantity: 6
• UPC: 079340404797

Standard Information

• Brand: LOCTITE
• Manufacturer Part Number: LOC743913