SEM 1K HS Clear - 20oz Aerosol Can - Matte Finish
SEM 1K HS Clear - 20oz Aerosol Can - Matte Finish

SEM 1K HS Clear - 20oz Aerosol Can - Matte Finish MPN - 40923

$38.51
$42.36
$38.51

MPN : 40923

SKU: 109321
Availability: In stock
Product type: Automotive/RV | Accessories,Boat Outfitting | Adhesives/Sealants/Tapes
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Subtotal: $38.51
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Matte clear finish
Single-component high-solids aerosol
For supported basecoat refinishing
SEM 1K HS Clear - 20oz Aerosol Can - Matte Finish

SEM 1K HS Clear - 20oz Aerosol Can - Matte Finish MPN - 40923

$42.36 $38.51
SEM 1K HS Clear - 20oz Aerosol Can - Matte Finish

SEM 1K HS Clear - 20oz Aerosol Can - Matte Finish MPN - 40923

$42.36 $38.51

    SEM 40923 1K HS Clear Matte 20 oz Aerosol, MPN 40923 and Mariners Warehouse SKU 109321, supplies single-component clear finishing for supported small refinishing jobs. Finish a supported small refinishing job with matte 1K HS Clear. Match the desired sheen, basecoat compatibility and flash procedure before clearcoating accessories, jambs, inner panels or new-part cut-ins.

    40923 identifies the matte version of SEM’s single-component high-solids clearcoat. Manufacturer applications include Ez Coat, Factory Pack and most automotive basecoats under the complete refinishing procedure. A clear film retains the underlying color while changing its finished appearance; verify the actual sheen on a test sample. It is not a hardener-activated two-component clear, and the listing does not establish universal fuel resistance, a numerical heat rating or suitability for every full-body/exterior repair.

    Choose preparation for the actual job. For supported previously painted/plastic blend areas, the TDS specifies a gray scuff pad or P400–P600 sanding, the appropriate cleaner and a clean tack wipe; plastic uses Plastic & Leather Prep and any promoter specified for the actual thermoplastic. For wet-on-wet/OEM refinishing, allow the basecoat to flash under its manufacturer’s instructions before clearing; do not automatically sand a fresh basecoat using the blend-area procedure. Shake well and apply 2–3 medium coats from 6–8 inches with 3–5 minutes flash between coats. The linked TDS gives 30 minutes dry time for 40923; verify actual conditions and handling readiness rather than treating this as universal full cure. Excessive clear or clearing before the basecoat flashes can rewet the basecoat. Clear the spray tip as directed and follow the current label/SDS for ventilation, protective equipment, ignition control and storage.

    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

    Review shipping information and return conditions before purchase.

    Application Guides

    Match the Repair Material to the Substrate and System

    Check 40923 by its actual clearcoat or plastic-adhesion-treatment role. Confirm substrate, coating system, finish, stocked label, preparation, application and exact package before choosing.

    1. Identify a Clearcoat Task

      Choose a clear finish for supported small accessories, jambs, inner panels or cut-ins under the complete refinish system.

    2. Match the Underlying Coating

      Verify Ez Coat, Factory Pack or the actual basecoat and the prescribed overcoat process. Do not infer adhesion to every raw material or universal resistance to fuel and heat.

    3. Choose the Clearcoat Sheen

      40923 supplies matte. 40903 is gloss, 40913 semi-gloss and 40923 matte; check the actual sheen with a sample. Their listed dry-time references differ.

    4. Choose Wet-on-Wet or Blend Preparation

      Allow a fresh basecoat to flash as specified. Use the separate scuff/clean/tack process only for the supported previously painted/plastic blend-area task; confirm any plastic promoter.

    5. Control Film Build and Flash

      Use 2–3 medium coats, 6–8 inches spray distance and 3–5 minutes flash. The TDS lists 30 minutes dry time for 40923. Excessive application or insufficient basecoat flash can cause rewetting.

    6. Confirm Yield and Separate Supplies

      Published coverage references differ: the current product/store page lists 28.6 square feet at 1 mil dry-film thickness, while the linked TDS lists 23.4 square feet per can at 1 mil. Confirm the applicable stocked formula and current SEM guidance before planning quantity; neither figure guarantees actual repair yield. One SEM 40923 1K HS Clear aerosol in matte finish, manufacturer-listed 20-ounce container format. Read the can for net contents. This is one can, not a six-can case. Basecoat, cleaners, abrasives, any specified promoter and other repair supplies are separate.

    Matte, Semi-Gloss or Gloss 1K HS Clear?

    SEM 40923 provides matte 1K HS Clear; 40913 provides the separately sold semi-gloss finish, and 40903 is gloss. Each is a clear, single-component aerosol in the listed 20-ounce container format. Choose the sheen from the original area and a test sample; matte and semi-gloss are different finishes.

    Use the exact finish’s current instructions: the linked TDS gives a 1-hour dry reference for gloss 40903 and 30 minutes for semi-gloss 40913 and matte 40923. All three use 2–3 medium coats and 3–5 minutes flash between coats. These drying references are not a universal full-cure guarantee or approval for every exposure. Review the SEM 1K HS Clear - 20oz Aerosol Can - Semi-Gloss Finish MPN - 40913 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.

    1. Compare Repair, Sealants & Trim

      Compare replacement seals, edge trim and repair products by their own documented role, dimensions and installation requirements.

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    2. Explore Wash & Surface Care

      Review cleaning products for a separate surface-care task. Check the exact material and label; category placement does not establish adhesive-preparation compatibility.

      Browse Wash & Surface Care

    3. Explore Automotive & RV Accessories

      Return to the parent collection for another maintenance or replacement task. Check every item’s own requirements.

      Browse Automotive/RV

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    Frequently Asked Questions

    What does SKU 109321 include?
    One SEM 40923 1K HS Clear aerosol in matte finish, manufacturer-listed 20-ounce container format. Read the can for net contents. This is one can, not a six-can case. Basecoat, cleaners, abrasives, any specified promoter and other repair supplies are separate.
    Which finish is this?
    Matte, under exact MPN 40923; the coating color is clear.
    Is this a two-component activated clear?
    It is a single-component 1K aerosol. No separate hardener or 2K activation kit is represented.
    Which underlying coatings are listed?
    SEM names Ez Coat, Factory Pack and most automotive basecoats. Confirm the exact coating and overcoat procedure rather than assuming every paint or raw substrate is compatible.
    How should I prepare a fresh basecoat?
    Allow it to flash under its manufacturer’s instructions before clearing. The TDS’s separate P400–P600 or gray-scuff-pad preparation concerns supported previously painted/plastic blend areas, not automatic sanding of a fresh wet-on-wet basecoat.
    What coat, flash and dry references apply?
    Apply 2–3 medium coats from 6–8 inches with 3–5 minutes flash. The linked TDS gives 30 minutes dry time for 40923; actual conditions and handling readiness must be checked.
    How much area will one can cover?
    Published coverage references differ: the current product/store page lists 28.6 square feet at 1 mil dry-film thickness, while the linked TDS lists 23.4 square feet per can at 1 mil. Confirm the applicable stocked formula and current SEM guidance before planning quantity; neither figure guarantees actual repair yield.
    How can I confirm the right selection?
    Contact Mariners Warehouse with SKU 109321, MPN 40923, your exact product MPN, component or substrate material, existing coating, application method, working conditions and required package size.

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