单词 | grease seal |
释义 | grease seal [`grēs´sēl] ENGINEERING 1. Type of seal used on floating pistons of some hydropneumatic recoil systems to prevent leakage past the piston of gas or oil; also used in cylinders of some hydropneumatic equilibrators. 2. Seal used to retain grease in a case or housing, as on an axle shaft. |
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