08684 - 3M Polyurethane Gray Sealing Putty Cartridge 310ml

Technical characteristics of 3M™ 08684 Polyurethane sealing putty

• Name : 3M™ polyurethane sealing putty
• Reference : 08684
• Brand : 3M
• Product type : Single-component polyurethane-based sealing putty
• Color : Gray
• Packaging : 310 ml aluminum cartridge
• Chemical base : Moisture-curable polyurethane
• Density : 1.74 g/cm³
• Consistency : Thick paste
• Solvent : Low xylene content
• Dry matter content : 95 %
• Flash point : 33°C
• Operating temperature : -31°C to +82°C
• Shelf life : 12 months in unopened original packaging

Properties and advantages

• Excellent sealing against water, dust, and air
• High resistance to corrosion and mechanical stress
• Compatible with epoxy, polyurethane, wood, plastics, and primed surfaces
• Direct application possible on sanded and cleaned steel (validated by 3M technical service)
• Usable together with spot welding operations
• Can be covered by most solvent-based or waterborne paints
• Good resistance to extreme temperatures from -31°C to +82°C

Recommended applications

• Sealing joints, body parts, openings, and windshields
• Sealing screwed or welded assemblies
• Filling and protecting metal surfaces, even bare
• Repairs on plastics, composites, and primed surfaces
• Anti-corrosion protection during spot welding (tested SAE J 2334)

Instructions for use

• Sand the area to be treated with a 3M ScotchBrite™ abrasive ref. 07447
• Clean the surface with a degreaser compliant with VOC legislation (avoid alcohol-based solvents)
• Pierce the cartridge tip, remove the metal seal, and install the mixing nozzle
• Place the cartridge in a 3M™ extruder gun (ref. 08990 or 08013)
• Cut the nozzle to the desired diameter
• Apply the putty, smooth if necessary, do not use alcohol for cleaning
• Delay before painting: minimum 30 minutes for a 6 mm bead at 21°C and 50% humidity
• Longer delay if less favorable conditions or thicker bead

Photo non contractuelle

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