417 (407) Microballoons
417 (formally 407) Microballoons are a LOW DENSITY FILLER used to make fairing putties that are easy to sand or carve. 417 Microballoons are reasonably strong on a strength-to-weight basis. It cures to a DARK RED/BROWN COLOUR. It is popular in the marine industry but can be used in a variety of applications and industries due to its excellent sanding qualities.
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