Devcon® Wear Resistant Putty (WR-2) 11410

 Devcon® Wear Resistant Putty (WR-2) is a ceramic-filled epoxy putty designed for repairing and protecting metal surfaces subjected to wear and requiring a smooth, low-friction finish. It is particularly suitable for applications such as repairing flange faces, machine ways, valve seats and bodies, and tracing guides. 

Product Overview

 Type : Two-part, ceramic-filled epoxy putty.

 Color : Dark Gray.

 Mix Ratio :

   * By Weight: 9:1 (Resin:Hardener).

   * By Volume: 4:1 (Resin:Hardener).

 Pot Life : Approximately 45 minutes at 75°F (24°C).

 Functional Cure Time : 16 hours at 75°F (24°C).

 Full Cure (Optional) : For maximum physical properties, cure at room temperature for 2.5 hours, then heat cure for 4 hours at 200°F (93°C).

 Service Temperature:

 * Wet: Up to 130°F (54°C).

 * Dry: Up to 250°F (121°C).

 Hardness : 85 Shore D.

 Compressive Strength : 9,800 psi (67.6 MPa).

 Adhesive Tensile Shear Strength : 2,200 psi (15.2 MPa).

 Flexural Strength : 6,500 psi (44.8 MPa).

 Modulus of Elasticity : 7.5 x 10⁵ psi (5.2 GPa).

 Dielectric Strength : 400 volts/mil.

 Dielectric Constant : 6.3.

 Thermal Conductivity : 1.67 x 10⁻³ cal/sec=cm=°C.

 Coefficient of Thermal Expansion : 32 x 10⁻⁶ in/in/°F (57.6 x 10⁻⁶ cm/cm/°C).

 Cure Shrinkage : 0.0005 in/in (cm/cm).

 Solids by Volume : 100%.

 Specific Gravity : 1.8 g/cm³.

Key Features

 Smooth, Low-Friction Finish : Ideal for applications requiring a smooth surface to reduce friction.

 Excellent Adhesion : Bonds to a variety of substrates, including steel, iron, aluminum, ceramic, concrete, brass, and some plastics.

 Wear Resistance : Contains ceramic fillers that provide excellent wear resistance, extending the service life of repaired components.

 Non-Rusting : The epoxy formulation prevents rusting, making it suitable for use in corrosive environments.

 Versatile Application : Can be applied to vertical surfaces up to ¼ inch thick without sagging.

 Gap Filling : Capable of filling gaps ranging from 0.0625 to 0.075 inches.

 Available Forms : Also available in liquid form for applications requiring a pourable consistency.

 NSN Listings : Recognized under NSN stock numbers 8030-00-229-8735 and 8030-00-229-8736. 

Applications

 * Repairing flange faces.

 * Restoring machine ways.

 * Fixing valve seats and bodies.

 * Repairing tracing guides.

 * Rebuilding and protecting interfacing metal surfaces subjected to wear.

 * Repairing metals and concrete surfaces.

 * Protecting metal from bi-metallic corrosion. 

Handling & Safety

Surface Preparation:

 * Ensure all surfaces are dry, clean, and roughened.

 * Degrease surfaces using solvents like MEK, Acetone, or IPA.

 * Remove paint, rust, and grime by abrasive blasting or mechanical methods.

 * For aluminum surfaces, remove oxidation before application.

 * Provide a profile on the metal surface by roughening (ideally by grit blasting or grinding).

 * Apply the putty as soon as possible after cleaning to prevent oxidation.

Mixing Instructions:

 * Mix resin and hardener at the specified ratio until a uniform color and consistency are achieved.

Application:

 * Apply at temperatures between 13°C and 32°C (55°F to 90°F).

 * Spread the putty over the prepared surface with a putty knife, pressing firmly to ensure maximum contact and avoid air entrapment.

 * For bridging large gaps or holes, use fiberglass, sheet metal, or wire mesh.

Safety Precautions:

 * Wear appropriate personal protective equipment (PPE), including gloves and eye protection.

 * Ensure adequate ventilation during application.

 * Avoid contact with skin and eyes; in case of contact, rinse thoroughly with water.