进口氟胶O圈内径474.3/477.8/482.6/482.8/492.8*8.6 FFKM O型圈

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进口VITON/FKM氟胶国标O型圈内径477.8/482.8/487.8/492.8*8.6

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【甬成】丁晴O型圈NBR内径464.3/467.8/472.8/474.3/477.8*8.6mm

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