Water thin fluid. Primer prepares, penetrates and softens the joining surface more rapidly than cement alone and enhances the bond strength. For all classes and schedules through 24"(600mm) diameter. For potable water, plumbing, irrigation, conduit, sewer, drain, waste and vent systems. Strongly recommended for pipe size larger than 3"(90mm) Meets ASTM F-656 standard requirements. Meets SCAQMD Rule 1168/316A and Qualify for LEED Green Building requirements. Brookfield Viscosity: Not Applicable (water thin) Shelf life: 3 years Store Product below