These bulking agents are hollow, clear microscopic spheres that make a low cost, low density filler. Added to epoxy resin and hardener mix, they make a good, heat-resistant, light-weight fairing compound with good compressive strength. Mixture can be blended with a small amount of Silica Thickener to prevent sagging.

Not recommended for glue.

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System Three Glass Microspheres 4.73L (5Qt)

Brand: System Three
Product Code: 3145S47