CLEASBY MASTIC GUN Category: Spray Equipment Product Information CLEASBY MASTIC GUN with 1/2” high pressure ball valve. Cleasby Mastic GunSO4355 Related Products GMAX II 7900 STANDARD SERIES Read more IN LINE HEATING SYSTEM Read more CLEASBY MASTIC ROOF GUN Read more 2,250 PSI SPRAY HOSE Read more