Isotech, established in 1977, is a manufacturer of rubber oil, plastic and metallic seals, diaphragm seals, seal kits, mast boosts and gaskets. They hold a patent on a product named the Bearing Isolator. They employ 76 at their facility in Rock Island. In 2001, QCREDA issued a $2,000,000 bond for the expansion of manufacturing that created 15 new jobs.
