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Product Information
Technical Datasheet
Safety Datasheet


Thioflex 555 is a two component, polysulfide self-levelling type sealant product designed to meet requirements in pavement applications. Machine Grade Product is ideal for ultra fast return to service and should be applied through a suitable metered application machine, by specialist applicators - details on request.
The product retains its movement accommodation of 35% on butt joints throughout temperature extremes. It does not harden in cold weather nor become excessively soft in hot conditions.
The width/depth ratio of the seal should be 1:1 to 1½:1 subject to a minimum 10mm depth of sealant (example, contraction joint: 15mm wide x 13mm depth; expansion joint: 25mm wide x 20mm depth).


Polysulfide sealant for the sealing and maintenance of joints in concrete roads, concrete runways and hard standings. Particularly suitable for sealing areas where fuel spillage might occur such as aircraft fuelling areas, oil terminals, garage forecourts, parking and cargo areas. Available in machine grade (ultra fast setting) and hand grade (fast setting).


  •  Machine applied grade for ultra fast safe application
  •  High extrusion rates
  •  Rapid return to service
  •  Available in hand grade
  •  Fuel and hydraulic fluid resistance
  •  Jet blast resistance
  •  Polysulfide - high stress relaxation
  •  High resilience
  •  Resistant to stone/ dirt pickup
  •  High durability and long service life
  •  High movement accommodation