SEM
SEM 29492 Black 2-in-1 Seam Sealer 9.5 oz Tube
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Hazardous material · Liquid
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Ground freight only (UPS/FedEx). Cannot ship via Air, USPS, or to PO boxes. APO/FPO addresses excluded.
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® 29492 is a 2-in-1 seam sealer supplied in a 9.5 oz tube, formulated for rapid sealing of seams and joints on automotive body panels before painting. It provides a flexible, durable film that bonds to a wide range of substrates, making it suitable for both new construction and repair applications.
The product cures to a 4 mm thickness in 24 hours at 70 °F (21 °C) with 50 % relative humidity, allowing predictable turnaround times. Work time ranges from 20 to 40 minutes under the same conditions, giving technicians sufficient flash time for adjustments. It adheres to aluminum, steel, fiberglass, wood, plastic, concrete, OEM-coated surfaces and primed substrates, ensuring versatility across body shop projects.
SEM® 29492 is classified with acute toxicity, aquatic toxicity, carcinogenicity, eye damage, organ toxicity, reproductive hazards, respiratory irritation, and skin corrosion. Use appropriate PPE-including eye protection, gloves, protective clothing, and a respirator-and maintain adequate ventilation. The flash point is 98 °C; consult the local VOC regulations for shelf-life considerations.
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, OEM, primer, SMC) is clean, dry, and free of loose material.
- Dispense the product from the 9.5 oz tube; no mixing ratio required.
- Apply a uniform coat with a brush or roller. Work within the 20-40 minute work window at 70°F (21°C).
- If additional coverage is needed, apply a second coat after the first coat has reached flash (touch-dry) - typically within the same work window.
- Allow the seam sealer to cure for 24 hours at 70°F (21°C) to achieve full hardness through a 4 mm depth.
Compatibility
Compatible paint systems: Solvent.
Specifications
| Part No. | 29492 |
|---|---|
| Product Line | SEM |
| MFR Model | 29492 |
| Standard/Approvals | California Pro65 Warning: Cancer | GHS and OSHA Hazard |
| Manufacturer | SEM |
| UPC | 646786294921 |
| Brand | SEM® |
| 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 | Black |
| 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 % RH
- Work Time
- 20-40 min @ 70 °F (21 °C)
- 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 are compatible with SEM® 29492 2-in-1 Seam Sealer?
It can be applied to aluminum, concrete, fiberglass, OEM parts, 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 cures in approximately 24 hours.
What is the usable work time after dispensing?
The product remains workable for 20-40 minutes at 70 °F (21 °C).
What personal protective equipment is required when handling this sealer?
Wear eye protection, chemical-resistant gloves, protective clothing, and a respirator as recommended in the SDS.
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, and a respirator when handling. The product is toxic if inhaled, can cause severe skin burns and eye damage, may affect internal organs and reproductive health, and is hazardous to aquatic life. 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 29492. Use this number when cross-referencing against TDS, SDS, or legacy supplier catalogs.
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