1. Air Duster 2. Removing contaminants 3. Extremely clean, filtered, dry gas 4. No harm glass, optics, this metals, rubber Air Duster used to ... manufacturing, maintenance, and repair applications. This non-ozone-depleting gas duster will not scratch or harm glass, optics, this metals, rubber ... used as directed. Produces pressure in excess of 70psi. Air Duster, Computer Cleaner