Grt 1/2
A light, coarse stone of volcanic origin, which consists of silicate of aluminum, sodium and potassium.
Classification: Pumice, except crude or crushed, whether or not heat-treated
NSN 5835-01-416-6449
NSN 6110-00-437-7877
NSN 6220-00-625-8554
NSN 5950-01-365-0633
NSN 6130-00-832-6692
NSN 5855-01-344-8688
NSN 6610-00-081-2365
NSN 5855-01-199-2046
NSN 5925-00-504-5364
NSN 6610-01-281-7536
NSN 5945-00-109-4504
NSN 2925-01-448-2880