The Single Seal is a replacement seal for spray tips. The abrasives in paint will eventually wear down the seal letting paint escape around the edges or delivering an uneven spray pattern. When the spray fan pattern starts to become erratic, check the seal.
Good seal is needed to prevent paint from leaking around the gun
For use with stains, latex, oil-based and water-based paints
Use with RAC IV spray tips
1 yellow gasket for solvents, 1 black gasket for latex, 1 seat for latex included