Stainless Steel Epoxy Topcoat: Application & Safety Guidelines

50457ZA Stainless Steel Epoxy Topcoat (Detail Gray) 1 Pint
50458ZA Stainless Steel Epoxy Topcoat (Spray Gray) 1 Pint
50457ZB Stainless Steel Epoxy Catalyst 1 Pint

Eastwood’s innovative new direct-to-metal (DTM) Stainless Steel Epoxy Topcoat suits a variety of needs, providing exceptional resistance to chemicals and corrosion with fast coverage and unsurpassed adhesion to bare metal substrates. An ideal protective coating for master cylinders, alternators, brackets, suspension components and other under hood parts. This two-part system produces a natural low-sheen bare metal look. Available in Detail Gray (50457ZA) to replicate stamped steel and rough die cast; and Spray Gray (50458ZA) to replicate the darker metallic gray color of cast iron. A high concentration of 316 Stainless Steel particles provides exceptional surface strength while the catalyzed system features superior durability without isocyanates, lead or chromate. Thanks to excellent filling qualities, Eastwood’s Stainless Steel Epoxy is ideal for use after sand/media blasting.



This product was designed for and is intended solely for use by trained professionals. Read all warning statements and heed all recommended safety precautions before proceeding.

DO NOT USE THIS SYSTEM WITHOUT SUFFICIENT VENTILATION. Users must wear appropriate, properly fitted NIOSH-approved activated charcoal cartridge respirator if a forced fresh-air system is not available. Always wear eye and face protection, as well as gloves and protective clothing. Do not use this product, or be exposed to spray mist / vapors if you have respiratory problems. See Material Safety Data Sheet for more complete safety information. KEEP OUT OF REACH OF CHILDREN AND PETS.

This system comprises multiple components. Once mixed, this system will have hazards of all components. Read warnings on all packages before opening.


For use over bare metal once previous finish has been blasted or stripped and all traces of rust are removed. Clean surface with Eastwood’s PRE Painting Prep (10194ZP, Quart or 10041Z, Aerosol), a specially-formulated blend of solvents designed to remove tar, wax, grease, road grime, silicone, buffing compound and other surface contaminates. If any new or smooth metal remains, be sure to abrade surface, then re-clean with PRE or other appropriate solvent product.

When applying Eastwood’s Stainless Steel Epoxy Topcoat over existing finishes, use same steps starting with PRE Painting Prep (10194ZP, Quart or 10041Z, Aerosol). Abrade the surface with 320 to 400 grit, then re-clean with PRE or other appropriate solvent product to remove any debris prior to application.


After shaking/stirring primer, thoroughly mix one part of Part A Stainless Steel Epoxy Topocat (pint) with one part of 50457ZB Stainless Steel Epoxy Catalyst (pint). No induction time is required with this epoxy system. Coating may be brush or spray applied immediately.

Tech Tip:To improve sprayability, 1:1 mixture may be cut by up to 20% with 50104ZP Universal Zero-VOC Urethane Reducer. Doing this will also improve the flow and leveling of the coating in a spray application.

Use caution in mixing materials as epoxy coating may begin to gel after approximately 90 minutes (at 70 °F).



Eastwood Stainless Steel Epoxy Topcoat should be brushed or spray applied in medium wet coats, with at least 30-minute flash period between each (at 70 °F). Typically, one to two coats is enough to achieve the desired 1 mil. dry film thickness, though more material may be applied as needed. Additional build requires longer flash periods between coats. Stainless Steel Epoxy Topcoat may be recoated after approximately 30 minutes (wait 45- 60 minutes after applying more than two coats), or up to about three days without sanding. After three days, surface MUST be scuff sanded prior to re-coating.

May be sanded (wet) the day after application. Wait two to three days before sanding dry.

NOTE: Eastwood’s Stainless Steel Epoxy Topcoat is designed to protect metal parts subjected to extreme conditions, including high heat (rated for intermittent exposure up to 300°F). Not intended for exterior applications, or other situations where exposed to UV.


Make sure all containers are sealed tightly immediately after each use. Gun and equipment may be cleaned with a Gun Wash or other appropriate solvent.


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