Maxx-ER 115722 Aluminum PowerChuck Spare Part Integrated Sealing RingMaxx ER 115722 Aluminum PowerChuck Spare Part Integrated Sealing Ring comes fully assembled and ready to use. Prevents the penetration of dirt and chips into the PowerChuck P in combination with Maxx ER pallets 148. MaxxDesign Exclusive Features: High quality materials. Product Information: Maxx ER Chuck Integrated anti debris sealing ring helps prevent debris and contamination of mating surfaces during machining processes, works on Maxx ER D150