Marine-Grade Caulking Mastic
UV-resistant mastic for sealing boat decks and hull joints, flexible in saltwater environments. Under HTS 3214.10.00.20 as caulking compound mastic. Nonrefractory formula for surfacing marine structures.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If used as putty for vehicle surfaces
Chapter 32 covers vehicle putties distinctly from general mastics.
If adhesives for marine applications
Primarily adhesive functions classify under Chapter 35.
If epoxy resin base in bulk
Epoxy polymers without full mastification go to Chapter 39.
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Import Tips & Compliance
• Comply with USCG standards for marine chemicals if destined for vessels
• Declare mildew resistance additives separately to avoid chemical chapter shifts
• Package in tubes for retail to differentiate from bulk industrial compounds
Related Products under HTS 3214.10.00.20
Silicone-Based Glazier's Putty
A mastic compound used by glaziers to seal glass panes in window frames, providing waterproofing and adhesion. It falls under HTS 3214.10.00.20 as a glazier's putty, a non-refractory mastic for sealing purposes. This product is distinct from bituminous mastics excluded by chapter notes.
Polyurethane Grafting Putty
A resin cement mastic applied to seal grafts on trees or plants, promoting healing and preventing infection. Classified under HTS 3214.10.00.20 as grafting putty, a specialized mastic. It adheres to chapter provisions for nonrefractory surfacing and sealing compounds.
Acrylic Caulking Compound
A paintable latex-based mastic for sealing gaps in walls, windows, and doors in construction. It is categorized under HTS 3214.10.00.20 as a caulking compound mastic. This nonrefractory preparation is used for indoor and facade surfacing.
Butyl Rubber Resin Cement
A mastic used in roofing and siding applications for flexible sealing against weather. Falls under HTS 3214.10.00.20 as a resin cement mastic, excluded from bituminous types. Provides durable, non-hardening seals for building envelopes.
Painter's Non-Sag Mastic Filler
A thick mastic for filling cracks and joints in drywall before painting, remaining in place without sagging. Classified in HTS 3214.10.00.20 as other mastics akin to painters' fillings. Used for indoor wall and ceiling surfacing preparations.
Oakum-Impregnated Grafting Mastic
Tar-impregnated fiber mastic for tree grafting wounds, providing breathable seal. HTS 3214.10.00.20 covers this as grafting putty mastic. Ensures chapter compliance by being non-bituminous.