HYBRIFLEX 480 GREY - HYB480GY Hybriflex 480 is a one part general purpose building sealant based on hybrid polymer technology. Product may be over painted after application. Ideal for use on: Perimeter pointing of uPVC and all window/door frames, fFor expansion joints in brick, stone and concrete, weather sealing applications, for parapet and roofline sealing, weatherproofing sealing to most external applications, construction and dilation joints where stress does not occur until fully cured, and trafficked floor joints.