SEM
SEM 29482 Beige 2-in-1 Seam Sealer 9.5 oz Tube
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Hazardous material · Liquid
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WARNING: Cancer & Reproductive Harm
California Pro65 Warning: Cancer
Tap for details → P65Warnings.ca.gov
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Overview
Built for the job.
2-in-1 seam sealer is a beadable and sprayable, high performance, one component MSP seam sealer for interior or exterior seams and OEM sprayed sound dampening pads.
SEM 29482 2-in-1 Seam Sealer is a beige, liquid sealant supplied in a 9.5 oz tube, designed for rapid sealing of seams and joints on automotive bodies before final finishing. It provides a single-component solution that bonds to a wide range of substrates, making it suitable for panel repair, filler blending, and pre-paint preparation.
The sealant offers a work time of 20-40 minutes at 70 °F (21 °C), allowing ample flash time for adjustment before curing. Full cure is achieved in 24 hours for a 4 mm film thickness under the same temperature conditions, ensuring a durable, moisture-resistant bond. Compatible substrates include aluminum, steel, fiberglass, wood, plastic, concrete, OEM panels, primer coats, and SMC composites.
Handling requires strict PPE: eye protection, chemical-resistant gloves, protective clothing, and a respirator due to acute toxicity, skin corrosion, and respiratory hazards. Use in a well-ventilated area; the material has a flash point of 98 °C and is classified under GHS hazard categories for carcinogenicity, aquatic toxicity, and organ toxicity.
Why Pros Choose SEM SEM
- OEM recommended
- Direct to metal
- Paintable immediately with most solvent based coatings
- Remains flexible without shrinking or cracking
- Colors match many OEM sealers
- Optimal working time
- Corrosion resistant
- Resistance weldable
- Excellent adhesion
- Contains no solvents or isocyanates
Application Guide
- Ensure the substrate (aluminum, steel, wood, fiberglass, plastic, concrete, primer, SMC, OEM) is clean, dry, and free of loose material.
- Shake the tube thoroughly; no mixing ratio is required for this 2-in-1 liquid product.
- Apply the seam sealer within the work window of 20-40 minutes at 70 °F (21 °C).
- Allow the film to flash dry for the remainder of the work time before handling or applying additional coats.
- Full cure to achieve 4 mm thickness requires 24 hours at 70 °F (21 °C) and 50 % relative humidity.
Compatibility
Compatible paint systems: Solvent.
Specifications
| Part No. | 29482 |
|---|---|
| Product Line | SEM |
| MFR Model | 29482 |
| Standard/Approvals | California Pro65 Warning: Cancer | GHS and OSHA Hazard |
| Manufacturer | SEM |
| UPC | 646786294822 |
| Brand | SEM® |
| Maximum Sale Quantity | 12 |
| Maximum Sale Day | 7 |
| Applicable Materials | Aluminum, Steel, Fiberglass, SMC, Glass, Concrete, Wood, Plastic |
| Composition | 13 to 30% Calcium Carbonate, 13 to 30% 1,2-benzenedicarboxylic Acid, Bis(2-propylheptyl)Ester,>=1.5-<3% N-(3-(Trimethoxysilyl)Propyl)Ethylenediamine, 1 to 1.5% Titanium Dioxide |
| Application Time | 20 to 40 min |
| Paintable (Y/N) | Y |
| Sprayable (Y/N) | Y |
| Component | 1K |
| Odor/Scent | Characteristic |
| Color | Beige |
| Setting Time | 1 hr |
| Flash Point | 98 deg C |
| Container Size (oz) | 9.5 |
| Container Type | Tube |
| Form | Liquid |
| Curing Time | 24 hr |
- Cure Time
- 4 mm / 24 hr @ 70°F (21°C) / 50% HR
- Work Time
- 20-40 min @ 70°F (21°C)
- Compatible Substrates
- Aluminum, concrete, fiberglass, OEM, plastic, primer, SMC, steel, wood
About SEM
SEM Products specializes in paint adhesion systems, flexible coatings, and plastic repair — the go-to choice for interior and trim refinishing.
Frequently Asked Questions
What substrates can I apply SEM® 29482 2-in-1 Seam Sealer to?
The sealer is compatible with aluminum, concrete, fiberglass, OEM plastic, primer, SMC, steel and wood.
How long does the seam sealer take to cure?
At 70 °F (21 °C) and 50 % relative humidity, a 4 mm film reaches full cure in 24 hours.
What personal protective equipment is required when handling this product?
Wear eye protection, chemical-resistant gloves, protective clothing and a respirator as recommended by the SDS.
Can I sand or paint over the cured seam sealer?
Yes. After the 24-hour cure period, the surface can be sanded and primed/painted using standard body shop procedures.
Documents & Safety
- Safety Data Sheet (SDS)
- sem_29462_catalog.pdf
- sem_29462_specification_sheet.pdf
- COLOR_COAT_13003_Catalog.pdf
Signal Word: Danger. Wear safety glasses or goggles, chemical-resistant gloves, protective clothing (coveralls or apron), and a respirator rated for organic vapors. This product can cause serious eye injury, skin burns, respiratory irritation, and is toxic if inhaled or swallowed; it is also classified as a carcinogen and hazardous to aquatic life. Use in a well-ventilated area and avoid any contact with skin, eyes, or clothing. Always refer to the full SDS before use.
Why Buy from autofxmart
- Authorized distributor — authentic, factory-fresh stock.
- Fast US shipping — most orders ship within 1 business day.
- 30-day returns — buy with confidence.
- Pro-shop pricing — bulk discounts available on request.
- Expert support — questions? Email us at support@autofxmart.com.
How to apply
Steps
1Clean both surfaces to bare, dry substrate.
2Load the cartridge and fit the mixing nozzle.
3Apply an even bead (or clamp) where needed.
4Tool or smooth the joint before it skins over.
5Allow to cure fully before stressing or painting.
Specifications
Full data
Frequently asked
Good to know
The curing time for SEM is 24 hr. Drying and curing times may vary with temperature, humidity, and film thickness — always consult the Technical Data Sheet (TDS) for exact cycle conditions.
This listing ships SEM in a 9.5 (TB) container. Check the autofxmart catalog for other sizes and bulk pricing.
Most in-stock orders for SEM ship the same or next business day from our US warehouse. Expedited options are available at checkout. Freight-class items may require an additional 1–2 days for carrier pickup.
Yes. autofxmart is an authorized distributor of SEM products. Every unit is factory-fresh, sealed, and backed by the manufacturer's standard warranty. If you have a concern, contact support@autofxmart.com and we will make it right.
The MPN for SEM is 29482. Use this number when cross-referencing against TDS, SDS, or legacy supplier catalogs.
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