3M Urethane Seam Sealer


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3M™ Urethane Seam Sealer

3M™ Urethane Seam Sealer is a high solids seam sealer ideal for sealing automotive and RV seams and joints. It adheres well to bare metal, primed metal and painted surfaces, and if desired can be smoothed to a featheredge and/or brushed. Tack free and paintable after 30-45 minutes, this urethane formula is permanently flexible and offers superior performance to solvent-based sealers.

Features and Benefits:

  • High quality, single component formula adheres well to bare metal, primed metal and painted surfaces
  • Moisture curing property provides excellent performance in high heat and humidity environments
  • Non-Shrinking, non-cracking, low/no odor formula remains flexible and offers superior results to solvent-based sealers
  • Paintable after 30-45 minutes
  • Thick consistency is able to fill large voids
  • Can be smoothed to a featheredge or brushed
  • Recommended for use with 3M™ Single Component Cartridge Applicator Gun PN08990 or 3M™ Professional Caulking Gun PN08993

Technical Specifications:

Adhesive Type
Adhering Floor Coverings, Bare Metal, Door Hem Flanges, Door Jambs, Door Skins, Exterior Seams & Joints, Fastening Headliner & Ceiling Systems, Floor Pans, Galvanized, General Purpose, Interior Seams & Joints, Joint Filling, Rear Body Panels, Rocker Panels, Wall & Door Panel Attachment
Consumer Label
Container Type
Cartridge, Flex-Pack
Cure Time
24 Hours
Full Cure Time
1/8 in per 24 Hours
Handling Time
10-20 Minutes
Product Color
Beige, Black, Gray, White
Product Form
Shelf Life in Months (From Date of Manufacture)
Surface Type
Painted Surfaces
Tack-free Time
25-40 Minute, 40 Minute
Volume (Imperial)
10.4 fl oz
Volume (Metric)
310 mL
Work Time
10 Minutes (varies with heat, humidity), 5-10 Minutes (varies with heat, humidity)

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