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OS120
Duct Sealant

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 & high pressure ductwork installations to prevent loss of air pressure.

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.

  • 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

Usage Guidelines

  • 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.

Technical data

PropertyTest MethodResult
 Composition synthetic rubber
Specific Gravity 1.3
Shore A Hardness 42
Skin Forming Timeat +23°C, 50% RH< 5 minutes 
Tack Free Time at +23°C, 50% RH5 minutes 
Application Temperature +5°C to +40°C 
Service Temperature -30°C to +90°C 
Storage  Store in dry conditions between +5°C and +25°C. 
Storage  12 months when stored as recommended in original unopened containers
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