SEM 29462 2-IN-1 Seam Sealer 9.5 oz White, MPN 29462 and Mariners Warehouse SKU 109291, supplies single-component beadable, sprayable and brushable seam sealing. Seal documented compatible seams with white SEM 2-IN-1 in a 9.5 oz cartridge. Choose the appropriate bead, brush or spray setup and check the current substrate-specific preparation.

The white 2-IN-1 formula is a single-component MSP seam sealer that can be beaded, brushed or sprayed with the prescribed equipment; SEM also documents OEM-style sprayable sound-dampening-pad work. The name describes application versatility, not two components mixed together. Select the actual substrate from the TDS and keep the full preparation, paint and cure conditions together. A seam-sealer listing does not establish structural panel bonding, universal roof-membrane compatibility or every RV repair application.

Bring the metal/substrate to 70°F / 21°C for one hour before application under the exact TDS. Follow the current 2-IN-1 TDS preparation for the actual substrate; the method differs for metal, coatings, composites and other materials. For beading, use the approved manual or pneumatic setup and prime by hand before pneumatic dispensing. Spray application requires a separate approved sprayable-seam-sealer applicator and the prescribed air/nozzle setup; an ordinary caulking gun alone does not provide the spray pattern. Do not apply directly over acid-based self-etching primers or apply those primers directly over this sealer; SEM warns of cracking or blistering. At 70°F / 21°C: working time 20–40 minutes; set time 1 hour; solvent-based paint window 0–24 hours; waterborne paint after 1 hour. Cure reference: 4 mm per 24 hours at 50% relative humidity. Actual conditions and bead thickness affect results. Tool or finish the seam under the exact instructions and verify continuity before the following coating. Follow the actual label/SDS.

Clear Product Details

Review the 16 oz gel format, specifications and application directions.

Surface Guidance

Check fiberglass, gelcoat and finish suitability before use.

Product Support

Ask about your surface and stain type before ordering.

Shipping & Returns

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Application Guides

Match the Repair Material to the Substrate and System

Check 29462 by its actual lubricant, cleaner, adhesive-removal or seam-sealer role. Confirm substrate, coating, product formula, preparation, application and package contents before choosing.

White 2-IN-1 or White 1K Seam Sealer?

SEM 29462 supplies white 2-IN-1 in a 9.5-ounce cartridge, with documented bead, brush and spray application under its own TDS. SEM 29362 supplies white 1K in a 10.1-ounce cartridge. They are both single-component products, but their substrate preparation, equipment and working/set times must be checked separately.

Choose 2-IN-1 when its documented application method and substrate coverage match the repair. A spray application requires its own approved equipment. Do not transfer 1K timing, primer assumptions or package size to the 2-IN-1 cartridge. Review the SEM 29362 1K Seam Sealer 10.1 oz White as a separately sold option.

Continue Your Repair, Sealants & Trim Selection

Choose by the actual repair function, substrate, profile and application instructions, then compare exact package contents.

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Frequently Asked Questions

What does SKU 109291 include?
One white 9.5 oz SEM 29462 cartridge. Dispensing gun, any spray applicator, nozzles, brushes and preparation supplies are separate unless confirmed in the stocked package. This is one retail cartridge, not a 12-cartridge case.
Which color and quantity are supplied?
One white 9.5 oz cartridge under MPN 29462; not a case.
Is this a two-part product?
No. 2-IN-1 describes application versatility; it is a single-component formula.
Which substrates are documented?
Properly prepared primed/painted surfaces, aluminum, steel, fiberglass, SMC, glass, concrete, wood and plastics under substrate-specific preparation. Treated wood can interfere; verify the exact material.
When can I paint it?
At 70°F / 21°C, current 2-IN-1 TDS gives solvent-based paint at 0–24 hours and waterborne paint after 1 hour. Verify coating compatibility and all TDS conditions. Paint timing is separate from full cure.
Can I use it directly over self-etching primer?
Do not use directly over acid-based self-etching primers or apply those primers directly over the sealer; SEM warns of cracking or blistering.
What are the working and cure references?
At 70°F / 21°C: working time 20–40 minutes; set time 1 hour; solvent-based paint window 0–24 hours; waterborne paint after 1 hour. Cure reference: 4 mm per 24 hours at 50% relative humidity. Actual conditions and bead thickness affect results.
How can I confirm the right selection?
Contact Mariners Warehouse with SKU 109291, MPN 29462, your exact product MPN, component or substrate material, existing coating, application method, working conditions and required package size.

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Need help comparing SEM 29462 2-IN-1 Seam Sealer 9.5 oz White, SKU 109291, MPN 29462? Share your exact product MPN, component or substrate material, existing coating, application method, working conditions and required package size. These details help us understand your selection question before you order.

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