Chopped ceramic fiber
Nextel™
3M Manufacturing And Industry Ceramics
NOTE: These fibers are considered non-respirable. Fibers with diameters greater than 3 microns are considered nonrespirable in humans. 3M™ Nextel™ 312, 440, 550, 610 and 720 Ceramic fibers are 7-13 microns in diameter and therefore pose no known chronic health effects.








