Built for the job.
SEM® 1K Seam Sealer is a versatile, single component sealer for sealing interior or exterior seams, joints, and voids.
SEM® 29362 is a 1‑component, 10.1 fl‑oz liquid seam sealer formulated for automotive body repair. It is applied to seal panel seams, filler joints, and trim interfaces before primer and paint, delivering a smooth, durable barrier that prevents moisture intrusion and paint defects.
The formula cures to a 4 mm film thickness in 24 hours at 70 °F (21 °C) with a workable flash time of 5–10 minutes, allowing sufficient adjustment before the seal sets. It adheres to a range of substrates including aluminum, steel, OEM pre‑finished panels, and primed surfaces, providing reliable bonding without the need for mixing or catalyst.
Due to its acute toxicity, skin corrosion, and respiratory hazards, use requires full PPE: eye protection, chemical‑resistant gloves, protective clothing, and a respirator in a well‑ventilated area. Follow H315, H319, H335, and H351 first‑aid procedures in case of exposure.
Why Pros Choose SEM 1-Component
- OEM recommended
- Direct to metal
- Paintable immediately
- Remains flexible without shrinking or cracking
- Colors match many OEM sealers
- Optimal working time
- Corrosion resistant
- Resistance weldable
- Excellent adhesion
How to Use
For use on properly prepped primed or painted surfaces and bare metal
- Ensure the substrate (aluminum, OEM primer, or steel) is clean, dry, and free of oil, grease, or loose material.
- Shake the 1‑component seam sealer tube thoroughly before use; no mixing ratio is required.
- Apply the sealer with a suitable applicator (brush, roller, or squeeze gun) in a continuous bead, covering the joint fully. One coat is typically sufficient.
- Work within the 5–10 minute work time at 70 °F (21 °C). Adjust ambient temperature if needed to maintain this window.
- Allow the seam to cure for 24 hours at 70 °F (21 °C) to achieve a 4 mm film thickness.
Compatibility
Compatible paint systems: 1K.
Specifications
| Part No. | 29362 |
|---|---|
| Product Line | SEM |
| MFR Model | 29362 |
| Standard/Approvals | GHS07 | OSHA HCS Hazard | OEM Approved | California PROP65 Warning: Cancer |
| Application | For use on properly prepped primed or painted surfaces and bare metal |
| Manufacturer | SEM |
| UPC | 646786293627 |
| Brand | SEM® |
| Maximum Sale Quantity | 12 |
| Maximum Sale Day | 7 |
| Applicable Materials | Prepped Prime and Painted Surfaces, Bare Metal |
| Composition | 13 to 30% Calcium Carbonate Calcium Carbonate, 13 to 30% 1,2-benzenedicarboxylic Acid, Bis(2-propylheptyl)ester,>=1.5 to <3% N-(3-(trimethoxysilyl)propyl)ethylenediamine, 1 to 1.5% Titanium Dioxide |
| Application Time | 5 to 10 min at 70 deg F |
| Paintable (Y/N) | Yes |
| Component | 1K |
| Odor/Scent | Characteristic |
| Color | White |
| Setting Time | 20 to 30 min at 70 deg F |
| Flash Point | 98 deg C |
| Container Size (oz) | 10.1 |
| Container Type | Tube |
| Form | Liquid |
| Series | 2900 |
| Temperature Rating (deg F) | 70 |
| Type | 1-Component |
| Curing Time | 24 hr at 70 deg F |
- Cure Time
- 4 mm / 24 hr @ 70 °F (21 °C)
- Work Time
- 5–10 min @ 70 °F (21 °C)
- Shelf Life
- Store in a cool, dry, well‑ventilated area
- Compatible Substrates
- Aluminum, OEM primer, steel
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 SEM 29362 Seam Sealer be applied to?
It is compatible with aluminum, OEM primer, and steel surfaces.
How long do I have to work with the seam sealer before it begins to set?
The work (flash) time is 5–10 minutes at 70 °F (21 °C).
What is the cure time for a 4 mm layer?
It reaches full cure in 24 hours at 70 °F (21 °C) for a 4 mm thickness.
What personal protective equipment is required when using this product?
Wear eye protection, chemical‑resistant gloves, protective clothing, and a respirator as recommended in the SDS.
How should the seam sealer be stored to maintain shelf life?
Store in a cool, dry, well‑ventilated area away from heat sources.
Documents & Safety
- Safety Data Sheet (SDS)
- sem_29362_specification_sheet.pdf
- COLOR_COAT_13003_Catalog.pdf
Signal word: Danger.
Required PPE: safety glasses or goggles, chemical‑resistant gloves, protective clothing (coveralls), and a suitable respirator.
Key hazards: toxic if inhaled or swallowed, can cause severe skin burns and eye damage, may be harmful to the environment, and is classified as a potential carcinogen.
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 [email protected].
