Polyurethane coupling inserts also called PU spiders or urethane coupling spiders are made from excellent quality PU from well known companies in the world and with a large variety of designs,colors and sizes available for clients' option,including series of GR, GS, MT, T, L, R, NM, MH, HRC, YOX etc.And also can be customized according to buyers' special requirements.They are the key parts to jaw type flexible couplings.
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