A toughness cushion ring is arranged at the bottom of the threaded column on the jar lid.
在坛盖上螺纹拄的底部，有一韧性垫圈。
The utility model comprises a jar body, a jar lid, an air hole, a cushion ring, internal screw threads and external screw threads.
本实用新型由坛体、坛盖、透气孔、垫圈、内螺纹和外螺纹构成。
Usage: according to the requirements of the product technical parameters, can be used in workshop, cold storage, seal, floor, seal cushion ring, mat, etc.
用途：根据产品的技术参数要求，可用于车间，冷库，密封，铺地，密封缓冲圈，垫等。
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