Preflex PU
Application

Used for expansion joint sealing in concrete panels, floor joint and road and bridge construction.

Description

High modulus, single component polyurethane hybrid-based sealant and adhesive that remains permanently elastic and has good adhesion to most substrates.

Features/ Benefits:

  • Excellent adhesion to a wide range of substrates.
  • Excellent chemical resistance.
  • Rapid curing.
  • Withstands vehicular trafficking.
  • Cures to form a tough but flexible seal.
  • Excellent abrasion resistance.

Applications:

Used for expansion joint sealing in concrete panels, floor joint and road and bridge construction.

Priming:

Preflex Porous Primer should be used on porous surfaces.

General information
Specification data - Polyurethane (PUR) construction joint sealants Enhanced data

Product Reference

Preflex PU

Standard product features

Suitable joints (w x d):

20–40 x 10–40 mm.

Colour:

Black.

Technical properties:

  • Movement accommodation factor: Butt joints 20% (movement in tension and compression).
  • Hardness (Shore A): 50.
  • Elastic recovery: >90%.
  • Elongation at break: 400%.
  • Modulus of elasticity: 0.94 N/mm².
  • Curing time: 3 mm/day.
  • Application temperature: 5–40°C.

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