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⚠️ IMPORTANT: Many Maax & Elite Spa Systems Require Two Cartridges
rinse with clean water and return the cartridge to the filter
cycle the filler through a full fill sequence and confirm the valve seats and stops flow cleanly at the set water level
Prevents pool water evaporation and heat loss
3 and 5 Pentair MasterTemp 400LP 400LP O-Ring Kit
Pentair Black O-Ring | Sta-Rite Posi-Flo II Cartridge Filters | WC9-3 Calcium Hardness ⚠️ IMPORTANT: Many Maax &The Pentair WC9 3 is the OEM replacement black O ring for Sta Rite Posi Flo II pool and spa cartridge filters, keeping the filter housing sealed and operating at full efficiency. IMPORTANT: LUBRICATION REQUIRED SOLD SEPARATELY Always lubricate this O ring with a silicone based lubricant before installation. We carry the Pentair R172351 Lifeguard Silicone Lubricant the OEM matched product for Pentair equipment. This O ring maintains the pressure seal
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