This ROTEX 28 coupling insert (also called a spider) is the flexible middle piece that connects the two metal hubs of a jaw coupling. It acts like a shock absorber for your vacuum pump’s drive system. Made of durable T-PUR® polyurethane material, this orange spider fits perfectly in ROTEX 28 size couplings. It reduces vibration, handles misalignment, and keeps your pump running smoothly .
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