Pentair O-Ring for 6-in. Suction Trap Lid | 6-IN. Trap Replacement Parts | 16920-0012

The Pentair O-Ring (16920-0012) is the OEM replacement lid seal for the 6-inch PKG 181 Plastic Suction Trap Assembly.

⚠️ 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 seats between the suction trap lid and the trap body, maintaining a watertight seal under suction. When the O-ring deteriorates or becomes deformed, the lid seal fails — allowing air to enter the suction line, reducing pump prime, and potentially causing the pump to lose flow. Replacing this O-ring at the first sign of cracking, flattening, or weeping restores the seal and protects pump performance. Match the part number 16920-0012 to your existing O-ring before ordering.

Specifications

Fits Into

Compatibility is based on Pentair parts documentation and available OEM records. This is not an exhaustive list. For certainty, verify the part number in your equipment's manual or on the original part itself before ordering.

Pro Tip

Before installation, apply a thin, even coat of Pentair R172351 Lifeguard® Silicone Lubricant to the O-ring. This helps the ring seat evenly in its groove, prevents tearing during lid assembly, and extends service life. Never use petroleum-based lubricants — they will degrade rubber O-rings and accelerate seal failure.