“RO-KIT272 Pentair Sta-Rite Posi-Flo II WC9-3 U9-301 O-ring Kit” has been added to your cart. Continue shopping Product Price Quantity Total × RO-KIT272 Pentair Sta-Rite Posi-Flo II WC9-3 U9-301 O-ring Kit $21.02 RO-KIT272 Pentair Sta-Rite Posi-Flo II WC9-3 U9-301 O-ring Kit quantity $21.02 Cart totals Subtotal $21.02 Shipping Shipping costs will be calculated once you have provided your address. Total $21.02 Proceed to checkout — OR — Calculate shipping Country / region: Select a country / region… United States (US) State / County: City: Postcode / ZIP: Update