SEK Joint Sand is a clean, dry angular sand that meets ASTM C-144 specification. This type of sand is the optimal gradation for stability and ensures long term performance of the pavement system. SEK Joint Sand is ideal for use with Trident's Joint Stabilizing Sealers when a hardened joint sand is desired to prevent sand washout, insect infestation and weed growth. Available in pearl, tan, gray, platinum. black and fieldstone.