Pentair Buna-N Cover O-Ring | Ultra-Flow Strainer | 39300600Z Main Drains we recommend using our Spa

we recommend using our Spa Refresh formula specifically tailored for smaller water systems

For pools that have a lot of leaves and debris

Corrosion resistant material

Built around Pleatco's Point Bonded Pool Filtration Fabric

Pentair Buna-N Cover O-Ring | Ultra-Flow Strainer | 39300600Z Main Drains we recommend using our SpaThe Pentair 39300600Z is the OEM replacement Buna N cover O ring for the Ultra Flow strainer, for units manufactured after November 1994. IMPORTANT: VERSION DATE CONFIRM BEFORE ORDERING This O ring is specified for Ultra Flow strainer units manufactured after November 1994. Verify your unit's manufacture date before ordering to ensure correct fitment. IMPORTANT: LUBRICATION REQUIRED SOLD SEPARATELY Always lubricate this O ring with a silicone based