277 / | HD | SEAL FOR A JOINT OR JUNCTURE |
345 | DF | SEAL BETWEEN RELATIVELY MOVABLE PARTS (I.E., DYNAMIC SEAL) {10} |
434 | DF | .~ Piston ring or piston ring expander or seat therefor {15} |
436 | DF | .~.~ Piston ring having peripheral radially sealing flexible projection (e.g., piston cup, etc.) {2} |
437 | .~.~.~ Having particular mounting, retaining, or supporting feature |