100% silicone rubber and wide range of building materials and finishes. Excellent resistance to weathering, ultra-violet radiation, vibration, moisture, ozone, temperature extreme, airborne pollution, cleaning detergents and many solvents Non-slumping can be used in vertical and overhead joints Provides excellent anti-corrosion barrier between dissimilar metals where electrolytic corrosion can be a severe problem Supplied in 310 ml. Standard plastic cartridges which fit ordinary caulking guns. Packing 20 cart/box