OB1 from Siroflex Limited is a multi-surface construction sealant and adhesive product described as a High Spec Hybrid Construction Sealant & Adhesive. The product has a tried and tested formulation, which has been used by the decorating industry for the past fifteen years. OB1 bonds and seals a range of materials from copper, aluminium, wood and MDF to mirror, lead, concrete, polystyrene, glass, tile, polycarbon, PVC and felt. OB1 also works in damp conditions and even under water.
OB1 is over paintable, odourless, solvent free, silicone free, food safe and flexible.