properties /facet

THE POLYMER FAMILY THE ADHESIVE OR SEALANT IS BUILT ON - epoxy, cyanoacrylate, silicone, polyurethane, acrylic, PVA, synthetic rubber, sodium silicate, EVA. It is the first line of every datasheet in the trade and three houses publish it under three names: Henkel heads its LOCTITE sheets with `Technology`, Permatex with `Chemical Type`, Sika with `Chemical base`. IT IS NOT THE SPINE'S `material` AND MUST NEVER BE FOLDED INTO IT, which is the b156 `friction_material` ruling meeting the same trap from the other side. `material` says what a product's BODY is made of and its vocabulary is shared with artefacts - it holds `silicone` because a spatula is made of silicone and `rubber` because a mat is. Reusing it here would let a shelf match a silicone gasket maker to a silicone bakeware set on an identical fact, and would put the tube's chemistry and the contents' chemistry into one unordered bag exactly as a pad's backing plate and its compound would have been. Seven of this vocabulary's nine values - epoxy, cyanoacrylate, polyurethane, PVA, synthetic rubber, sodium silicate, EVA - have no counterpart in MaterialTypes at all, which is the plainest evidence that these are two different sets and not one. The tube is packing and is not the good, on b154's ruling for the oil bottle. NOT REQUIRED, and that is an adversary amendment taken whole against the generator's draft: K-Seal publishes its composition as `ceramic microfibers and copper particles`, a particulate suspension that is none of the nine values, so a required slot would make a real member of this class - a radiator stop-leak, one of the ten demand rows' own category - unstateable [A3]. The vocabulary grows on the first tube read rather than the slot forcing a wrong answer, which is `friction_material [one]`'s shape at b156 where the same recipe-versus-substance problem arose. Concern facet, the filing `material`, `base_fluid`, `filter_media` and `friction_material` already carry.