Adheseal PU25 FC 600ml


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$10.30 $9.30

Product Overview

Adheseal PU25 FC is a single-component moisture curing polyurethane construction sealant. It is a tough, durable, and mould-resistant sealant with excellent chemical resistance. This fast-curing polyurethane provides a highly flexible bond and exhibits excellent adhesion to most common building materials. It is suitable for various applications, including perimeter sealing, curtain walls, masonry joints, expansion joints, tile joints, metal cladding, pavements, car parks, driveways, ducting systems, and general construction. It can also be used as an adhesive for lightweight components.


  • Highly flexible
  • Fast curing
  • Paintable
  • Tear-resistant
  • Excellent adhesion to most common building materials
  • Anti-fungal
  • Tested to AS1530.3 standards

Joint Preparation

Care must be taken to ensure that the substrates are sound, clean, and free from contamination. If necessary, clean with Adheseal cleaning solvent. Priming is not normally required, but adhesion testing is recommended for suspect surfaces. Use the correct primer when required and allow it to dry. It is highly recommended to prime floor joints. Refer to the Primer Selection Chart.

Backer Rod

Use Adhefoam open cell backer rod where required. Closed cell backer rod is also suitable, but care must be taken not to damage the outer skin of the rod, as this can cause gassing (bubbles) in the sealant. When the depth of the joint does not allow for backer rod, a bond breaker tape is required to prevent three-sided adhesion.


Fill the prepared joint completely, taking care not to entrap air, as entrapped air may cause bubbles in the sealant. Dry tool immediately before the sealant skins. The tooling time is a minimum of 10 minutes, depending on temperature and humidity.

Physical Properties

  • Type of product: Polyurethane
  • Curing system: Moisture cured
  • Density (specific gravity): 1.2
  • Movement Capability: ±25%
  • Shore A hardness: 25
  • Chemical Resistance: Excellent to water, detergent solutions, diluted acids & alkalies, petrol, and oil for short periods
  • Application temperature: +5°C to +40°C
  • Service temperature: -30°C to +90°C
  • Storage: Cool, dry between 10°C and 35°C
  • Tack Free Time: 2hrs @ 23°C & 60% RH
  • Cure Time: 3mm/24 hrs
  • Skin Time: 30-40 min
  • VOC (Californian South Coast air Quality Management Rule 1168): 62gm/Lt
  • Shelf life: 12 months in original packaging
  • Clean up: Uncured material can be removed using industrial strength solvent such as Xylene or mineral turps
  • Packaging: 600ml sausage / 20 per carton
  • Colours: Concrete Grey, White and Black
  • Test certificates: AS: 4020:2005 for use with potable water, Tensile Strength ISO 37 1.1 Mpa, Tear Strength ISO 34 6.5N/mm, AS1530.3 Test report 23-000124 AWTA Ignitability Index 0, Spread of Flame Index 0, Heat Evolved Index 0, Smoke Developed Index 0-1

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Customer Reviews

Based on 2 reviews
Water Tank Rescue
Great Product!

Have used similar polyurethane bases sealants before with varying results. PU25 is consistently high standard and provides excellent adhesion and flexibility. Dries pretty quick and the low VOC makes it perfect for confined spaces.

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These guys have got you covered, not only have they got the gear they know how to use it. I'll be back.

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