One-Hour Cure Armature Balancing Putty BC-28 is a two-part epoxy balancing compound for use in weight addition balancing of electric motor armatures. BC-28 has a smooth, fibrous, putty-like consistency, which keeps the compound from migrating during the balancing process. The two parts of the putty, parts A and B, are mixed 1:1 by volume or by weight. The Blue Part A and the Yellow Part Bare easily mixed by hand until the color is a consistent Green. The BC-28 may then be placed on the motor armature as indicated until the armature is in balance. The working life of the mixed BC-28 is less than 1 hours depending upon mass and temperature. Overnight, BC-28 cures to a solid, which resists moisture and solvents. Mixed material can be frozen to slow cure during an 8 hour period. This product may contain fillers that may settle over time. Product may need to be stirred before using. Customer must determine suitability of product before using. BC-28 is in compliance with European Directive 2002/95/EC on the reduction of hazardous substances. TYPICAL PROPERTIES TEST METHOD VALUE Working Life (hours): 1 Cure Time: Overnight Shore D Hardness: ASTM D2240 85 Tensile Strength (psi): ASTM D638 1700 Weight Change upon Cure: <0.02% Specific Gravity (g/cc): ASTM D1475 2.50 Color: Blue Specific Gravity (g/cc): ASTM D1475 2.50 Color: Yellow Mixed Product: Specific Gravity (g/cc): ASTM D1475 2.50 Color: Green Shelf Life (months): Part A (in sealed container): 12 Part B (in sealed container): 6 Spin Testing: Compound was fully cured on the insulated copper windings of a 4.5 cm diameter motor armature. The armature is then spun at 375°F at 8,000 rpm. The test is denoted passing. There was no separation of the material to the To the best of our knowledge, the information contained herein Is accurate. However STAR TECHNOLOGY. Inc.. does not assume any liability whatsoever for the accuracy or completeness of the information contained herein. Final determination of the suitability of any material is the sole responsibility of the user The information contained herein is considered typical properties and is not intended to be used as specifications for our products This Information Is offered solely to assist purchaser in selecting the appropriate products for purchaser's own testing All materials may present unknown hazards and should be used with caution Although certain hazards are described herein and in the material safety data sheet, we cannot guarantee that these are the only hazards that exist Repeated and prolonged exposure to epoxy resins can cause sensitization or other allergic responses. 200 EXECUTIVE DRIVE. WATERLOO. IN 46793

One-Hour Cure Armature Balancing Putty APPLICATION PROCEDURES Carefully weigh out appropriate amounts of resin and hardener into a clean mixing container and thoroughly mix until all streaks and striations are gone. CAUTION: Unmixed compound from the sides or bottom of the container can cause soft spots or uncured areas in the completed piece. To prevent this, transfer the entire mixed contents to a second clean container and remix for a short time before using. For industrial use only. Keep away from children. Refer to the Material Safety Data Sheets (MSDS forms) pertaining to this product before...