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密封圈O型圈 内径417.8 437.8 452.8 472.8 502.8 504.3线径8.6mm
进口氟胶O圈内径415.8/417.8/422.8/424.3/432.8*8.6 FFKM O型圈
硅胶圈EPDM橡胶圈硅胶密封圈硅胶o型圈412.8*8.6/417.8*8.6密封圈
【甬成】丁晴O型圈NBR内径407.8/412.8/414.3/415.8/417.8*8.6mm
进口VITON/FKM氟胶国标O型圈内径417.8/422.8/427.8/432.8*8.6