.5 oz. USC Liquid Hardener - US Chemical & Plastics

The US Chemical & Plastics 30020 .5 oz. USC Liquid Hardener is a professional-grade MEKP catalyst specifically formulated to reliably initiate the curing process for polyester body fillers and resins. Its consistent liquid formulation ensures predictable performance, offering technicians precise control for achieving optimal cure and strong adhesion in both automotive and industrial composite applications. This hardener is engineered to support durable, long-lasting repairs in demanding professional environments.

Key Features

• Reliable Curing Activation: Effectively activates polyester body fillers and resins, promoting thorough, uniform curing and dependable bond strength for lasting repairs.
• Consistent Liquid Application: This clear liquid hardener integrates and mixes easily, ensuring even dispersion within fillers and resins to minimize soft spots or under-cured areas.
• Optimized for Controlled Dosing: The compact 0.5 oz. size is ideal for small repairs, spot work, and precise material dosing, aiding in waste reduction and preventing over-mixing.
• Enhanced Repair Durability: Facilitates durable repairs that exhibit improved resistance to impact, shrinkage, and premature failure during subsequent finishing stages, including sanding, priming, and topcoating.

Applications

The USC 30020 Liquid Hardener is primarily used to catalyze polyester body fillers on various substrates, including steel, aluminum, and properly prepared OEM and refinish surfaces in automotive collision repair. It is effective for tasks such as dent repair, panel smoothing, feather edging, and surface finishing before primer and paint application. Beyond automotive use, it is suitable for curing compatible polyester and fiberglass resins in marine repair, RV and trailer panel restoration, and general industrial composite fabrication requiring accurate, small-batch hardener dosing.

Specifications

• Manufacturer: US Chemical & Plastics (USC)
• Model Number: 30020
• Product Name: .5 oz. USC Liquid Hardener
• Volume: 0.5 fl oz
• Weight: 0.03 lb
• Dimensions: 1 x 1 x 1 in