3M 08458 Rigid Pillar Foam, Two-Part Urethane, 200 mL Cartridge
- 3M 08458 Rigid Pillar Foam is a two-part urethane foam-in-place filler supplied in a 200 mL static-mixing cartridge, designed to expand and fill automotive posts, pillars, and body cavities to restore rigidity and reduce noise.
- Features:
- Delayed reaction time allows precise placement before expansion
- Expands up to ten times its original volume for efficient cavity fill and minimal waste
- Closed-cell foam structure resists moisture intrusion and maintains rigidity after cure
- Flows into hard-to-reach areas without manual compaction
- Replicates OEM rigid foam properties for NVH control and structural support
- Specifications
- Part No.: 8458
- Product Line: MMA
- MFR Model: 08458
- Standard/Approvals: OSHA 29 CFR 1910.1200
- Applications: For door hem flanges, door skins, floor pans, general purpose, rear body panels, voids and gaps
- Manufacturer: 3M Products
- Trade Mark: Automix
- Alternate Part Number-1: 05113508458
- Brand: 3M
- Composition: 15 to 40% Polypropylene Glycol Glycerol Triether, 1 to 10% Dimethyl Siloxane, Reaction Product With Silica, 1 to 10% Water, 1 to 5% Diethylene Glycol, 1 to 5% Potassium Acetate, 0.5 to 1.5% Polyalkylene Glycol, 0.5 to 1.5% Siloxane Polyalkyleneoxide Copolymer
- Specific Gravity: 1.24
- Color: Yellow
- Container Size (mL): 200
- Flash Point: >=200 deg F
- Container Type: Cartridge
- Form: Liquid
- Temperature Rating (deg F): -20 to 180
- Curing Time: 1 hr
- Part Number 08458, 3M ID 7100004037, UPC 051135084588
- The Rigid Pillar Foam can also be referred to as rigid automotive foam filler, expanding pillar foam, noise-damping foam, body cavity rigidity foam, and two-part expanding urethane foam.
3M 08458 Rigid Pillar Foam delivers efficient and precise restoration of structural and noise-dampening foam in vehicle cavities. Its high expansion and closed-cell rigidity combine with OEM-like performance to streamline repair and NVH control in collision and bodywork applications.
Q: How much does this foam expand and fill a cavity?
A: One 200 mL cartridge expands to approximately 225 cubic inches, filling large cavities efficiently with minimal material waste.
Q: What are the work time and cure time for this foam?
A: The foam has a brief work time of about 60 seconds before expansion starts and fully cures in approximately one hour at standard ambient temperature.
Q: What areas of a vehicle is this product intended for?
A: It is ideal for replacing OEM rigid foam in posts, pillars, side reinforcement sections, floor pans, roof bows, and other body cavities to restore rigidity and reduce noise.
