U.S. Silica Company (Industrial Metals)

MIN-U-SIL® is a high purity, high quality natural crystalline silica that is available exclusively through U. S. Silica. This ground silica sand is inherently inert, white, bright, has low moisture and is at least 99.2% SiO2.

MIN-U-SIL® is available in five uniform size distributions; 5, 10, 15, 30 and 40 micron. They feature unmatched fineness and consistency of particle size due to a special processing technique developed by U.S. Silica.

Special processing techniques assure controlled particle size distribution, which means elimination of excessive coarse and fine particles. These properties, combined with inertness and inherently low cost, make MIN-U-SIL® the best quality filler/extender for a range of applications including paints and coatings, sealants, silicone rubber and epoxy.

Silicone Rubber
In silicone rubber, MIN-U-SIL Ground Silica is an excellent semi-reinforcing filler. Its inert nature and high dielectric strength make it an excellent filler in electrical compounds. The consistent pH and narrow size distributions allow very high loading with minimal effect on viscosity and cure rate.

How to select a product:
The number in each product name reflects the U.S. standard for expressing sieve openings; typically 98% of the grade is finer than the number expressed in micrometers (microns).
EXAMPLE: MIN-U-SIL 40  means typically 98% or more ground silica is finer than 40 microns.