| 277 / | HD | SEAL FOR A JOINT OR JUNCTURE |
| 345 | DF | SEAL BETWEEN RELATIVELY MOVABLE PARTS (I.E., DYNAMIC SEAL) {10} |
| 409 | DF | .~ Close proximity seal (e.g., contactless, fluent, etc.) {4} |
| 411 | DF | .~.~ Gap or clearance {2} |
| 412 | DF | .~.~.~ Labyrinth {7} |
| 416 | | .~.~.~.~ Segmented |