SIMILAR SEALING STRUCTURES FOR MOUNTING ON PISTON AND ABOUTROD:
(under the class definition) Sealing means comprising sealing means providing the same basic sealing structure for use in different embodiments such as (1) on a part (i.e., a piston) that reciprocates along an axis of an enclosing wall and, (2) on either the enclosing wall surrounding a reciprocating part (e.g., rod, etc.) or the part (i.e., a piston).
