08789 - 3M Polyurethane Black Sealing Sachet 310ml

Technical Characteristics Black Polyurethane Sealing Putty 3M™ 08789

• Name : Polyurethane Sealing Putty 3M™
• Reference : 08789
• Brand : 3M
• Product type : 1K single-component sealing putty
• Packaging : Flexible sachet of 310 ml (nozzle provided)
• Chemical base : Moisture-curable polyurethane
• Color : Black
• Consistency : Thixotropic paste (does not run)
• Density : 1.12 g/cm³
• Solid content : 92%
• Skin formation time : 30 to 35 min at 23°C, 55% RH
• Working time : 1h30 at 20°C, 55% RH
• Curing rate : ≥ 4 mm after 24 hours
• Hardness : 20 Shore A after 24h, final hardness 50
• Elongation at break : 500%
• Operating temperature : -40°C to +90°C (short peaks 120°C)
• Application temperature : +5°C to +35°C
• Shelf life : 12 months in unopened original packaging

Properties and Benefits

• Excellent adhesion on metals, plastics, composites, and wood
• No shrinkage, does not run or sag
• Can be painted after 30 min (solvent-based paint) or 45 min (water-based paint)
• Excellent resistance to water, oils, fuels, and weathering
• Cures to form a permanent and flexible seal
• Suitable for welding putty directly on bare steel
• Flexible sachet, easy to extrude with a suitable gun

Recommended Applications

• Sealing door joints, roof panels, floor panels
• Filling gaps between panels and overlapping joints
• Sealing and protecting screwed or welded assemblies
• Sealing large or medium-sized bodywork
• Use on metal, plastic, and wood surfaces

Instructions for Use

1. Thoroughly degrease the area with 3M™ Universal Cleaner 08984
2. Insert the sachet into a suitable gun (ref. 08006, 08013 or equivalent)
3. Cut the end of the sachet near the metal clip
4. Install the supplied nozzle and cut it according to the desired bead width
5. Apply the putty and smooth if necessary before skin formation
6. Leave a little putty protruding at the nozzle end to facilitate resumption after interruption
7. Complete curing in 24 hours at normal temperature and humidity

Photo non contractuelle

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