Joints (sealants)
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U-Seal 816

One-part polyurethane self-levelling sealant NPT bubble-free curing LC-Technology

U-Seal 816 is a one-component, self-levelling, pourable grade polyurethane concrete pavement sealant. It cures under the influence of atmospheric moisture to form a high-performance compound with permanent elasticity and resistance to ageing and weathering. U-Seal 816 is based on NPT LC-Technology, developed to avoid bubbling present in traditional one-part PU Sealants.  LC-Technology combines the best properties of traditional polyurethane sealants to a bubble-free curing system and very low emissions.    

Areas of Application  U-Seal 816 has been specifically developed to be used as a pourable joint sealant in rigid pavements in airfields, roads, concrete floors where high adhesion, abrasion-resistance and high chemical resistance to fuels, oils and hydrocarbons is required. 

Certified according to:
EN 15651-4 PW INT/EXT   
EN 14188-2 System S Type SL Class D (test fuel II) 
ASTM C920 Type S, Grade P, Class 25, Use M and G   

Compliant to:
ISO 11600 Type F Class 25 sub-class LM 
LEED iEQc 4.1; SCAQMD Rule 1168; BAAQMD Reg 8 Rule 51 
CARB VOC levels regulation 
  • One part - no mixing on site. Self-levelling consistency
  • Bubble-free curing
  • Non staining
  • Resistant to hydrocarbons, oils and fuels. Bitumen-free
  • Primerless adhesion on concrete
  • Permanently elastic; accommodates joint movement of ±25%
  • Good resistance to ageing, weathering and cleansing agents, sea water, lime water

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