Amorphous fumed silica (also known by the brand name Cabosil or Aerosil) is used with polyester or epoxy resins as a thickening and thixotropic agent. It helps prevent sag or run off on vertical surfaces. It may be used in conjunction with other additives such as glass bubbles and/or milled fibers to achieve additional structural properties. Ships within one business day.
4 oz, 8 oz, 1 lb