Seal Plate Square Style O-ring For Pentair Challenger 355329 O-506

New Pool Pump Housing Seal Plate SQUARE CUT O-ring Replacement for Pentair High PSI Challenger Pump. Replacemnt For 355329 O-506. This is square cut DO NOT purchase if you need the Round o-ring.
Aftermarket Seal Plate Pump Housing Square Cut Oring
Replacement For Part Numbers: 355329, O-506