(under subclass 935) Made of a particular material consisting of specific distinct substances that retain their identities in the material used to form the sealing means.
SEE OR SEARCH CLASS
428, Stock Materials or Miscellaneous Articles, a residual class for a structurally defined stock material, nonstructural laminate, article of manufacture or intermediate article of manufacture, not provided for elsewhere;
320.2+, comprising a single or plural web or sheet that contains components where at least one contains a liquid or has a constituent trapped inside preformed walls; subclasses 357+ containing or consisting of a strand, fiber, grain, cell, particle or any substance in terms of a particular size or shape, a plurality or such arranged relative to one another, a particular interengagement of a plurality of such or a coating associated therewith; subclasses 411.1+ for a composition of layers adhered or cohered to each other; subclass 426 for layers adhered or cohered to each other where a layer contains glass that may be in fiber or mat form; or subclasses 615+ comprising different contiguous layers or portions, each having a matrix or continuous phase of free metal.
