Rust-oleum 9125402 Epoxy Mastic Coating 1 Gal Gloss Blue

Product Description

The RUST-OLEUM 9125402 is a direct-to-metal epoxy mastic coating formulated for rust prevention on steel and concrete surfaces. Supplied in a 1-gallon can with a gloss finish in blue, it delivers 100 to 225 square feet of coverage per gallon depending on surface profile and application method. This is a two-component system — an activator is required but not included. VOC content is 340 grams per liter, so confirm local compliance before use. The coating is rated for indoor use and is applied in ambient temperatures between 50 degrees F and 120 degrees F. Industrial maintenance painters and coating contractors are the primary installers.

This epoxy mastic coating is suited for indoor industrial and commercial environments where steel structures, equipment frames, tanks, or concrete floors require a durable, corrosion-resistant finish. Its direct-to-metal formulation reduces surface prep steps on properly cleaned steel. Tack-free time is 20 minutes, allowing relatively fast handling. Full cure requires 26 hours, with a recoat window opening at 72 hours. Compatible activator part numbers from the supplier data are 07836737, 00243543, 00243568, and 00243527.

Key Features

• Direct-to-metal epoxy mastic — bonds to steel and concrete without a separate primer on clean surfaces
• 100 to 225 square feet per gallon coverage depending on surface texture and application method
• Gloss finish in blue for easy identification in color-coded maintenance systems
• Tack-free in 20 minutes; fully dry in 26 hours for fast return to service
• Application temperature range of 50 degrees F to 120 degrees F for broad indoor use
• Two-component system — activator required, sold separately

Compatibility

Designed for use on steel and concrete substrates in indoor rust-preventative applications. Compatible activators include part numbers 07836737, 00243543, 00243568, and 00243527 per manufacturer documentation.

Installation Notes

Application of epoxy mastic coatings should be performed by trained industrial painters or maintenance coating technicians familiar with two-component systems. Mix the activator thoroughly per manufacturer ratio instructions before application and do not thin beyond manufacturer limits. Ensure the substrate is clean, dry, and free of oil, rust scale, and loose material before coating. Adequate ventilation is required even in indoor settings given the 340 grams per liter VOC content; confirm compliance with local air quality regulations before use.