illbruckmaking it perfect. Property Composition Specific Gravity Shore A Hardness Skin Forming Time Tack Free Time Application Temperature Service Temperature Storage Shelf Life Description OS120 is a rapid curing duct sealant which gives a firm but flexible seal in low movement joints which is based on a solvented rubber-based formulation. Colour Grey Packaging 380 ml cartridges (12 per carton) Test Method Result synthetic rubber 1.3 42 at +23°C, 50% RH < 5 minutes at +23°C, 50% RH 5 minutes +5°C to +40°C -30°C to +90°C Store in dry conditions between +5°C and +25°C. 12 months when stored as recommended in original unopened containers Necessary Tools • Cartridge gun and sharp knife. Protective Equipment USE IN WELL VENTILATED CONDITIONS and ensure all recommended protective equipment is worn during handling & use of this product. For full recommendation, refer to safety data sheet. Priming • No priming required. Surface Preparation • Joints should be clean, dry and free from substances likely to impair adhesion. • Loose friable material should be removed. • Joint width and joint depth should not be less than 3 mm to ensure adequate penetration of the sealant and performance. Joint Backing • If necessary back fill the joint with polyethylene joint backing in order to control the depth of sealant. Application • The user is advised to conduct tests to determine the suitability of the product for the intended application prior to use. • Apply with conventional skeleton gun at temperatures between +5°C and +40°C. Usage / Purpose OS120 is a rapid curing duct sealant which gives a firm but flexible seal in low movement joints. It has been designed for permanent sealing in low, medium and high pressure ductwork installations to prevent loss of air pressure. When correctly applied, the product is capable of sealing to the air leakage requirement of Class C to HVCA standard DW 144. Key Benefits • Prevents air leakage in low, medium and high pressure ductwork • Can be used to meet requirements of Class C to HVCA standard DW 144 • Rapid curing - allows fast track sealing of ductwork

OS120 1 Duct Seal FLANGE JOINTS • Apply a strip of TN013 Flange Sealing Tape around the inside perimeter of the joint to be sealed to act as a spacer. • Apply a continuous bead of OS120 around the external perimeter. Assemble the joint and strike off any excess adhesive. • Alternatively, apply a continuous bead between the flanges around the edge of the gasket after assembly and firmly tool into the joint. SEAM JOINTS • Firmly gun a bead of sealant along the seam and tool as required. SPIGOT JOINTS (spiral ducting) • Apply a thick coat of sealant to the male end of the coupling, slide on the...