(under the class definition) Dispensers in which packing, gasket, or sealing material is provided for joints, closures or flow controllers to prevent or reduce leakage.
SEE OR SEARCH THIS CLASS, SUBCLASS:
512, for resilient means exerting a joint sealing bias only.
541.1+, for frangible seals.
SEE OR SEARCH CLASS
215, Bottles and Jars, 341+, for closures with packing type seal.
220, Receptacles,
378, for packing type seals.
277, Seal for a Joint or Juncture, for a generic sealing means or process,
345+, for a seal between relatively movable parts (i.e., a dynamic seal) or subclasses 628+ for a static contact seal for other than a an internal combustion engine, or a pipe, conduit, or cable.
