| 单词 | hat leather |
| 释义 | > as lemmashat leather hat leather n. Engineering now rare a hat-shaped leather seal forming part of a piston or used to prevent leaks in a hydraulic pump, etc. ΘΚΠ society > occupation and work > equipment > other specific types of equipment > [noun] > washer or liner washer1346 gasket1828 babbitting1851 bush1865 hat leather1869 liner1886 space washer1934 O-ring1954 1869 Engineer 3 Dec. 369/1 In making hydraulic joints three types of leathers are used, which may be classed as cup, cap, and hat leathers. 1940 Chambers's Techn. Dict. 405/1 Hat-leather packing, an L-section leather ring, gripped between discs to form a piston, or similarly attached to the ram of a hydraulic machine to prevent leakage. 1983 Buck & Hickman Catal. 1983–5 825 (table) Proving pumps... Spare leather seal (hat leather) for ¾in pump. < as lemmas |
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