Loctite EA 3471 Fixmaster Steel Putty

LOCTITE EA 3471 (1lb) is a steel-reinforced grey epoxy repair putty engineered for maximum efficacy in metal repair. This industrial-grade adhesive permanently rebuilds worn parts and seals vessels, preventing costly downtime and mechanical failure caused by cracks, cavitated areas, and non-structural defects. Whether you are securing vessels, tanks, and valves or repairing defects in castings and making jigs, this premium two-part epoxy putty provides a robust, leak-proof seal on all metal surfaces—including all metal substrates.

Why Choose LOCTITE EA 3471?

• Metal-Like Finish: Cures to a hard, durable finish that can be machined, drilled, tapped, or filed to original dimensions.
• Superior Adhesion: Provides an exceptionally strong bond on all types of metal substrates without shrinking.
• Non-Sagging Formula: Easy to apply on vertical or overhead surfaces without running, sagging, or needing heat or welding.
• Industrial Rebuilding: Ideal for heavy-duty applications such as resurfacing worn air seals and filling cavitated or damaged areas.
• Wide Temperature Resiliency: Maintains highly effective performance across a dependable operating range of -30 °C to +105 °C.

Technical Specifications

• Product Type: 2-Part Steel-Reinforced Epoxy Putty
• Strength: High (Machinable/Steel-Filled)
• Color: Grey
• Container Size: 1lb (0.45kg) Kit
• Certifications: Industrial Metal Repair Standard

Simple Application Instructions

1. Clean: For optimal results, remove dirt, oil, and grease using a suitable cleaner (such as Loctite SF 7840). Blast surfaces with a sharp-angled grit to a depth of 75 to 100 microns, then clean with a waterless parts cleaner before oxidation takes place.
2. Apply: Mix the resin and hardener vigorously on a clean, dry surface until a uniform color is obtained. Force a thin layer deep into the texture of the prepared substrate, then immediately build up to your desired finished thickness.
3. Assemble: Shape or apply the material as required. The formula will begin its room temperature cure once mixed, forming a highly wear-resistant repair. (Ensure application environment is above 15 °C and relative humidity is below 85%).

Frequently Asked Questions (FAQ)

What is LOCTITE EA 3471 used for?

LOCTITE EA 3471 is a steel-reinforced epoxy putty designed for non-structural metal repair. It is specifically formulated to prevent equipment and vessels from failing due to defects in castings, cavitated areas, worn air seals, or leaks in tanks and valves.

Can LOCTITE EA 3471 be disassembled?

No. Once fully cured, this product cures to a permanent, wear-resistant, metal-like finish. The material cannot be disassembled and can only be removed mechanically by grinding, machining, or severe abrasion.

Does LOCTITE EA 3471 work on contaminated surfaces?

No. Proper surface preparation is critical. Surfaces must be thoroughly degreased, grit-blasted near white metal, and completely clean. For metal exposed to salt solutions (like seawater), it must be washed and blasted repeatedly until chloride concentration is below 40 ppm for reliable adhesion.

Is LOCTITE EA 3471 safe for pure oxygen environments?

No. LOCTITE EA 3471 is not recommended for use in pure oxygen and/or oxygen-rich systems. It should not be selected as a sealant for chlorine or other strong oxidizing materials.