WCO Explanatory Notes reproduced for reference. © World Customs Organization. Verify against official WCO publication.
32.14 - Glaziers' putty, grafting putty, resin cements, caulking corn ounds and other mastics; painters' fillings; non-refractory surfacing preparations or favades, indoor walls, floors, ceilings or the like. f 32 14.10 - Glaziers' putty, qafting putty, resin cements, caulking compounds and other mastics; painters fillings 3214.90 - Other The products of this heading are preparations of widely differing composition which are essentially chacterised by the uses to which they are put. are usually put up in a more or less pasty form and in general they harden or However, some are in solid or powder forms which are made pasty at the (e.g., by melting) or by addition of a liquid (e-g.,water). The products of this heading are usually applied with a caulking gun, a spatula, a trowel, a. plasterer's float or similar tools. (I) GLAZIERS' PUTTY, GRAFTING PUTTY, RESIN CEMENTS, CAULKING COMPOUNDS AND OTHER MASTICS These preparations are mainly used to stop, seal or caulk cracks and, in certain cases, to bond or firm1 join components together. They are distinguished from glues and other adhesives by the fact tiat they are applied in thick coatmgs or layers. It should be noted, however, that this group of products also covers mastics used on the skin of patients around stomas and fistulas. This group includes : (1) Mastics based on oil. These are composed essentially of drying oils, fillers (whether they react with the oils or are inert) and hardeners. The best known product of this type is glaziers' puw. (2) Mastics based on wax (luting wax). These consist of waxes (of all kinds) to which resins, shellac, rubber, resin esters, etc., are often added to increase the adhesive effect. Mastics in which wax is wholly or partly replaced by products such as cetyl alcohol or stearyl alcohol are also considered as mastics based on wax. Mastics of this paragraph include grafting putties and sealants for coating barrels, casks, etc. (3) Resin mastics and cements. These consist of natural resins plastics (al d resins, polyesters, coumarone-indene with the ad 'tion of other materials (e.g., waxes, oils, lime, cements or any other mineral fillers). It should be noted that certain of these mastics are also covered by the types described below (e.g., those based on plastics or on rubber). The mastics and cements of this group serve man purposes, for example, as fillers in the electrotechnical indus or for sealing glass, meta or porcelain objects. They are generally applied after they have een made fluid by melting. % 'T (4) Mastics based on water-glass. These are enerally prepared at the time of application by mixing together two components. One of ese cons~stsof an aqueous solution of sodium silicate and potassium-sodium silicate and the other of fillers (quartz powder, sand, asbestos fibres, etc.). They are mainly used to seal sparking plugs, engine blocks and sumps, exhaust pipes, radiators, etc., and to fill or stop certain joints. tH, (5) Mastics based on zinc oxychloride. These are obtained from zinc oxide and zinc chloride to which retarding agents and, in certain cases, fillers are added. They are used for filling holes or cracks in wood, ceramics, etc. (6) Mastics based on magnesium o chloride. These are obtained from magnesium chloride and magnesium oxide, to which %ers (e.g., wood flour) are added. They are mainly used to stop or seal cracks in wooden articles. (7) Mastics based on sulphur. These are composed of sulphur mixed with inert fillers. They are put up as solids, ,and are used to produce hard, waterproof, acid-resistant stoppings, and also to bond or fix pieces in place. (8) Mastics based on plaster. These are put up as fibrous and flocculent owders, composed of a mixture of about 50 % plaster with other materials such as as estos fibres, wood cellulose, glass fibres or sand. The are made pasty by the addition of water, and used to secure screws, gudgeon pins, dowe s, hooks, etc. g r (9) Mastics based on plastics (e-g., polyesters, polyurethanes, silicones and epoxide resins) whether or not containing a hi@ added pro orbon up to 80 % of various fillers (e.g., clay, sand and other silicates, titanium dioxi!Le, metailic powders . Some of these mastics are used after the addition of hardeners. Some mastics do not harden and remain tacky Others harden by the evaporation of solvents, by after exposure to the abmos here or by the (multi-component rnastics7. I Products of this nature are to be classified in this heading only if they are fully formulated for use as mastics. Mastics may be used to seal certain jolnts in construction or home repair, for sealing or repairin glass, metal or porcelain articles, as fillers or sealants for coachwork or, in the case of a8hesive sealants, to bond various surfaces together. (10) Mastics based on zinc oxide and glycerol. These are used to make acid-resistant coatings, to bond iron pieces to porcelain ware, and for joining tubes. (1 1) Mastics based on rubber. These may be composed, for example, of a thioplast with the addition of fillers (graphite, silicates, carbonates, etc.) and in certain cases of an organic solvent. They are used, sometimes after the addition of a hardener, to ive flexible rotective coatings (resistant to chemical agents and to solvents), and also or caulking. K e s e mastics may also be corn osed of aqueous dispersions of rubber, containing added colouring matter, plasticisers, fil erg, binders or anti-oxidants, used for hermetically sealing metal cans. P !? (12) Mastics of a kind used on the skin. These may be composed, e.g., of sodium carboxymethylcellulose, pectin, elatin and olyisobutylene in an organic solvent such as isopropyl alcohol. They are u s e l for examp e, on the skin of patients around stomas and fistulas as sealants to form a leakproof contact between the skin and waste collection bags. They have neither therapeutic nor prophylactic properties. P (13) Sealing waxes. They consist essentially of a mixture of resinous materials (e.g., shellac, rosin), together with a (usually high) proportion of mineral fillers and colourmg matters. They are used to fill holes, for the watertight sealing of glass apparatus, for sealing documents, etc. (11) PAINTERS9FILLINGS; NON-REFRACTORY SURFACING PREPARATIONS FOR FACADES, INDOOR WALLS, FLOORS, CEILINGS OR THE L I m These products differ from the mastics, etc., described above in that they are generally applied to larger surfaces. They are distinguished from paints, varnishes and similar products by their high content of fillers and (if present) of pigments; this content is generally much higher than that of the binders and solvents or dispersing liquids. (A) PAINTERS' FILLINGS. ., indoor walls) for ainting.by levelling out %ales or porous surP aces. Paint is applied on Painters' fillings are used to pr are surfaces (e. irregularities an4 if necess ,%ling in cracks, them after they have hardene and been sanded. This category also includes fillings based on oil, rubber, lue, etc. Fillin s based on plastics with a composition similar to that of certain mastics o the same kin are also used for coachwork, etc. f i (B) NON-REFRACTORY SURFACING PREPARATIONS. Non-refractory surfacing preparations are used on fagades, indoor walls, floors and ceilings, swimming ool walls and floors, etc., to mike them waterproof and improve their appearance. Generally t ey remain visible as the final surfacing. R This group includes : (1) Powdered preparations consisting of equal parts of plaster and sand with plasticisers. (2) Preparations in owder form based on quartz and cement with small quantities of added plasticisers, use! c for instance, after adding water, for setting wall or floor tiles. (3) Pasty preparations made by coating mineral fillers (ground marble, quartz, or a mixture of quartz and silicate, for instance) with a binder (plastics or resins), wth added pigments and, where appropriate, water or solvent. (4) Liquid preparations consistin& for instance, of synthetic rubber or a ~ l i polymers, c asbestos fibres mixed with a plgment, and water. These are applied on faqa es wth a paint brush or spray gun and form a much thicker layer than paint. In the case of certain of the products described above, the intermixture of the various constituents, or the addition of certain constituents, must be carried out at the time of use. Such products remain classified in this heading provided the constituents are : (i) having re ard to the method in which they are ut up, clearly identifiable as being intended to be use together without first being repacket$ f (ii) presented together; and (iii) identifiable, whether by their nature or by the relative proportions in which they are present, as being complementary one to another. However, in the case of roducts to which a hardener has to be added at the time of use, the absence of the hardener oes not exclude these products from this headin , provided they are, by their composition or packin , clearly identifiable as intended to be use in the preparation of putties, masks, fillings or sur acing preparations. ?L ? The heading excludes (a) Natural resins known in certain countries as " mastics " (heading 13.01). (b) Plasters, lime and cements covered by heading 25.20,25.22 or 25.23. (c) Mastics of asphalt and other bituminous mastics (heading 27.15). (d) Dental cements and other dental fillings (heading 30.06). (e) Brewers' pitch, and other products af heading 38.07. (0 Refractory cements and mortars (heading 38.16). (g) Prepared binders for foundry moulds or cores (heading 38.24). f
1.- This Chapter does not cover : (a) Separate chemically defined elements or compounds (except those of heading 32.03 or 32.04, inorganic products of a kind used as luminophores (heading 32.06), glass obtained from fused quartz or other fused silica in the forms provided for in heading 32.07, and also dyes and other colouring matter put up in forms or packings for retail sale, of heading 32.12); (b) Tannates or other tannin derivatives of products of headings 29.36 to 29.39, 29.41 or 35.01 to 35.04; or (c) Mastics of asphalt or other bituminous mastics (heading 27.15). 2.- Heading 32.04 includes mixtures of stabilised diazonium salts and couplers for the production of azo dyes. 3.- Headings 32.03, 32.04, 32.05 and 32.06 apply also to preparations based on colouring matter (including, in the case of heading 32.06, colouring pigments of heading 25.30 or Chapter 28, metal flakes and metal powders), of a kind used for colouring any material or used as ingredients in the manufacture of colouring preparations. The headings do not apply, however, to pigments dispersed in non-aqueous media, in liquid or paste form, of a kind used in the manufacture of paints, including enamels (heading 32.12), or to other preparations of heading 32.07, 32.08, 32.09, 32.10, 32.12, 32.13 or 32.15. 4.- Heading 32.08 includes solutions (other than collodions) consisting of any of the products specified in headings 39.01 to 39.13 in volatile organic solvents when the weight of the solvent exceeds 50 % of the weight of the solution. 5.- The expression “colouring matter” in this Chapter does not include products of a kind used as extenders in oil paints, whether or not they are also suitable for colouring distempers. 6.- The expression “stamping foils” in heading 32.12 applies only to thin sheets of a kind used for printing, for example, book covers or hat bands, and consisting of : (a) Metallic powder (including powder of precious metal) or pigment, agglomerated with glue, gelatin or other binder; or (b) Metal (including precious metal) or pigment, deposited on a supporting sheet of any material.