Butyl Rubber Caulking Compound
Synthetic rubber-based caulk for roofing and siding applications, providing excellent weatherproofing and low permeability. Falls under HTS 3214.10.00.10 as a caulking mastic, not a pure rubber product due to its compounded mastic form. Used in industrial and residential sealing.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as plates or sheets of vulcanized butyl rubber
Uncompounded rubber forms go to Chapter 40, not mastics.
If bituminous or asphalt-modified versions
Bituminous mastics explicitly excluded and classified under hydrocarbons.
If retail-packed for non-construction surfacing
Consumer-oriented nonrefractory preparations in heading 3212.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure labeling distinguishes from pure rubber sheets (Chapter 40) by noting mastic additives
• Include flash point data for hazardous material declarations if flammable solvents present
Related Products under HTS 3214.10.00.10
High-Performance MS Polymer Caulk
Modified silane (MS) polymer hybrid caulking for demanding joints, combining silicone and polyurethane benefits. As a caulking mastic, it fits HTS 3214.10.00.10 for construction gap sealing. UV-stable and isocyanate-free.
Silicone Caulking Compound
A flexible, waterproof sealant made from silicone polymers used for sealing gaps around windows, doors, and bathtubs in construction and home improvement. It falls under HTS 3214.10.00.10 as a caulking compound, specifically classified among mastics for its mastic-like properties in joint sealing. This product provides adhesion and elasticity without hardening fully.
Acrylic Latex Caulking Sealant
Water-based acrylic latex compound designed for interior sealing of gaps in drywall, trim, and woodwork, paintable after drying. Classified under HTS 3214.10.00.10 as a caulking compound due to its mastic properties for non-structural joints. It offers easy cleanup and flexibility for home repairs.
Polyurethane Construction Caulk
High-performance polyurethane-based caulking for exterior expansion joints in buildings, offering UV resistance and high elasticity. It is a mastic-type caulking compound under HTS 3214.10.00.10, distinct from glues due to its gap-filling application. Ideal for commercial construction sealing.
Clear Silicone Kitchen & Bath Caulk
Transparent silicone caulking compound for sanitary sealing around sinks, showers, and countertops, mildew-resistant. Classified in HTS 3214.10.00.10 for its role as a flexible caulking mastic in wet areas. Dries to a rubber-like seal without cracking.
Paintable Acrylic Caulking for Trim
Low-odor, paintable acrylic latex caulk for baseboards, crown molding, and interior trim gaps. HTS 3214.10.00.10 covers it as a caulking compound mastic for non-structural filling. Allows seamless finishing after painting.