Aqua Ultraviolet – ULTIMA II Filter O-Ring (for 1,000–20,000 Models)

Aqua Ultraviolet – ULTIMA II Filter O-Ring (for 1,000–20,000 Models)

Overview

OEM replacement tank/valve O-ring for Aqua Ultraviolet Ultima II pressurized filters. Restores a drip-tight seal between the multi-port valve and filter body to stop leaks and air draw.

Key Features

• Genuine Aqua Ultraviolet seal for Ultima II filters

• Sized to fit the full family: 1,000 / 2,000 / 4,000 / 6,000 / 10,000 / 20,000

• Resilient elastomer; compatible with silicone-safe lubricants

• Quick, tool-light fix for weeping or flattened gaskets

Compatibility

• Aqua Ultraviolet Ultima II filters from 1,000 up to 20,000 gallons

• Seats between the multi-port valve and filter vessel lid (verify placement in your manual)

Specifications

• Part Type: Valve-to-tank O-ring

• Material: Durable elastomer (black)

• Environment: External, wet-location seal (non-submersible component by itself)

What’s Included

• (1) ULTIMA II O-ring (fits 1,000–20,000 series)

Installation Notes

1. Shut off pump and relieve pressure; set valve to Closed.

2. Remove the multi-port valve; lift out the old O-ring and clean groove/mating faces.

3. Lightly coat the new O-ring with silicone-safe lubricant—no petroleum products.

4. Seat evenly in the groove; reinstall valve hand-tight, then snug—do not overtighten.

5. Pressurize and leak-test; recheck after the first backwash cycle.