Pentair Diffuser O-Ring 3/16" x 4-7/8" | EQ Series Pump | 350037Z Filter Cartridges Check your filter's manufacture date

Check your filter's manufacture date label — typically found on the tank body or data plate — before ordering

This closure (154575Z) fits Triton C-3 filters manufactured before March 1997

Pentair Part Number 59016200 Part Name Air Bleed Sock Kit Quantity Included Kit Compatible Filter Types Cartridge Filter Fits Into

⚠️ IMPORTANT: Outer Diameter Difference from OEM

Pentair Diffuser O-Ring 3/16" x 4-7/8" | EQ Series Pump | 350037Z Filter Cartridges Check your filter's manufacture dateThe Pentair 350037 is the OEM replacement diffuser O ring for the EQ Series Commercial Plastic Pump, sized 3 16" x 4 7 8". 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 seals the diffuser assembly within the EQ Series pump, preventing bypass of water