Pentair 192320 Upper Bulkhead O-Ring for 2" DE Filters & Cartridges – Clean And Clear Plus 520 Cartridge Filter

Pentair 192320 Upper Bulkhead O-Ring for 2" DE Filters & Cartridges

OEM Pentair 192320 upper bulkhead O-Ring (2-137 Buna-N 70) for Clean & Clear Plus, FNS, Nautilus filters. Restore leak-free seal.

Features

• Genuine OEM Pentair upper bulkhead O-ring
• Uses Buna-N 70 Shore elastomer for chemical and wear resistance
• #2-137 size for 2" bulkhead sealing in DE and cartridge filters
• Compatible with Clean & Clear Plus, FNS / FNS Plus, Nautilus filters
• Restores reliable, leak-free upper bulkhead seal
• Low cost part to maintain filter integrity and reduce pressure loss

Description

The Pentair 192320 Upper Bulkhead O-Ring is engineered to provide a durable, leak-resistant seal at the top bulkhead connection of your pool filter. Molded from Buna-N 70 elastomer and sized #2-137 for 2-inch applications, this OEM part is designed to resist chlorine, pool chemicals, and repeated pressure cycles. It fits a range of Pentair filtration systems including Clean & Clear Plus, FNS, FNS Plus, and Nautilus series. When your upper bulkhead shows signs of leaking or degradation, this O-ring is a direct replacement to restore proper sealing and system efficiency.

Pro Tip

Lightly lubricate the O-ring with a silicone-based lubricant before installation to ease seating and reduce wear. Always inspect the bulkhead surface for scratches or debris before installing to ensure a tight seal.

Installation Tips

Depressurize the filter before servicing. Clean both the bulkhead housing and surfaces thoroughly. Apply light silicone lube to the O-ring. Do not overtighten — snug engagement is sufficient.