Loctite LOC21425 Fast Cure Epoxy Adhesive 4 Gm

Product Description

The LOCTITE LOC21425 is a fast-cure, two-part epoxy adhesive formulated for rapid structural bonding in maintenance, repair, and industrial service applications. It delivers an initial working time of 5 minutes at 77 degrees F and reaches full cure in 10 minutes, making it well suited for jobs where downtime matters. The adhesive bonds effectively to glass, hard plastics, rubber, and metal surfaces. Rated for continuous service up to 180 degrees F, it holds up in moderate-heat environments encountered in HVAC equipment rooms, mechanical spaces, and light fabrication work. Technicians and maintenance professionals keep this compact 4 gm unit in their service kits for quick field repairs.

LOC21425 is used across residential and commercial maintenance applications wherever a fast, rigid epoxy bond is needed on mixed materials. Common scenarios include sealing cracked plastic housings, bonding metal brackets, repairing rubber gaskets, and adhering glass components. Its small single-use format reduces waste and eliminates concerns about partially used adhesive curing in storage. Suitable for HVAC, plumbing, electrical, and general mechanical repair contexts where a heat-tolerant structural adhesive is called for.

Key Features

• 5-minute working time at 77 degrees F for rapid field application
• Full cure achieved in 10 minutes, minimizing equipment downtime
• Bonds to glass, hard plastics, rubber, and metal surfaces
• Heat resistance up to 180 degrees F for moderate-temperature service environments
• Compact 4 gm single-use format — no waste from partial use

Compatibility

Designed for bonding and repair applications on glass, hard plastics, rubber, and metal substrates across general maintenance and trade service work.

Installation Notes

Surface preparation is critical — clean and degrease all bonding surfaces before applying the epoxy. Mix components thoroughly per the manufacturer's ratio instructions to ensure full cure and bond strength. Allow the full 10-minute cure time before applying any mechanical load to the joint. Work in adequately ventilated areas, as epoxy fumes can accumulate in enclosed mechanical spaces.

Technical Specifications

• Net Weight (Adhesive): 4 gm
• Package Weight: 0.3 pounds
• Working Time: 5 minutes at 77 degrees F
• Full Cure Time: 10 minutes
• Maximum Service Temperature: 180 degrees F
• Compatible Substrates: Glass, hard plastics, rubber, metal
• UPC: 079340214257
• Unit of Measure: Each

Standard Information

• Brand: LOCTITE
• Manufacturer Part Number: LOC21425