Pentair | 25230-0010S | Filter Tank O-Ring | Posi-Clear Cartridge Filter Seal

The Pentair 25230-0010S filter tank O-ring is a replacement sealing gasket designed for Sta-Rite Posi-Clear and Posi-Flo II pool and spa cartridge filter systems. This O-ring installs between the filter tank lid and body to create a watertight seal that maintains proper filtration pressure and prevents leaks during operation. It is commonly used with PXC series filters including models PXC75, PXC95, PXC125, and PXC150.

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Key Features

• Replacement tank O-ring designed for Sta-Rite Posi-Clear and Posi-Flo II cartridge filter systems.
• Creates a watertight seal between the filter tank lid and body to prevent water leaks.
• Helps maintain proper filtration pressure and consistent water circulation.
• Compatible with PXC series cartridge filters including PXC75, PXC95, PXC125, and PXC150.
• Durable elastomer construction resists pool chemicals, compression wear, and environmental exposure.
• Approximate diameter of about 11 inches for proper fit in compatible filter tank assemblies.

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Product Overview

The Pentair 25230-0010S tank O-ring is an essential sealing component used in Sta-Rite Posi-Clear and Posi-Flo II cartridge filtration systems. Installed between the filter lid and tank body, the O-ring forms the compression seal that keeps the filter housing watertight while the system operates under pressure.

Maintaining a proper tank seal is critical for efficient filtration and preventing pressure loss in the system. Over time, O-rings can become worn, flattened, or brittle due to chemical exposure and repeated compression cycles. Replacing the tank O-ring restores proper sealing, prevents leaks, and helps ensure reliable operation of Posi-Clear and Posi-Flo II cartridge filter systems.