3214.10.00 - Glazier's putty, grafting putty, resin cements, caulking compounds and other mastics; painters' fillings

This HTS category, 3214.10.00, encompasses a variety of specialized sealing and filling compounds. It specifically covers glazier's putty, used for fixing glass in frames, and grafting putty, applied in horticulture for plant propagation. Resin cements and caulking compounds, designed for sealing joints and preventing leaks, are also included. Furthermore, this classification extends to painters' fillings, which are materials used to prepare surfaces for painting by smoothing imperfections and filling cracks.

The distinction between this category and its sibling, 3214.90 (Other), lies in the specific nature of the products. While 3214.90 covers "other" mastics and preparations not explicitly detailed in 3214.10, this category is for the precisely defined items such as glazier's putty, grafting putty, resin cements, caulking compounds, and painters' fillings. The primary function of goods classified here is typically sealing, bonding, or filling within construction, repair, or artistic contexts.

Within this category, a further subdivision exists under the broader heading of "Mastics." The subcategory 3214.10.00.90 specifically addresses "Painters' fillings." This highlights that while the parent category includes a range of putties, cements, and compounds, a distinct classification is made for those specifically formulated and marketed as surface preparation materials for painting.