SHAMROCK TECHNOLOGIES › SST 1MG SST 1MG $0.00 SHAMROCK SST® 1MG is a friable grade of PTFE powder which can be reduced to an average particle size of 1 - 2 microns. Quantity: Add To Cart Added! SHAMROCK SST® 1MG is a friable grade of PTFE powder which can be reduced to an average particle size of 1 - 2 microns. You Might Also Like SST® 2 SST® 3 RC SST® 3 SST 3P SST® 4