The Pentair 154661 #2-111 air bleed adapter O-ring is a replacement sealing gasket designed for pool and spa sand filter air relief assemblies. This O-ring installs on the air bleed adapter to create a watertight seal that prevents leaks while allowing trapped air to be safely vented from the filter tank. It is commonly used in Pentair Triton II and Triton C sand filter systems to maintain proper filtration pressure and reliable operation.
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Key Features
• Replacement #2-111 O-ring designed for Pentair air bleed adapter assemblies used in sand filter systems.
• Creates a watertight seal that prevents leaks around the air relief adapter connection.
• Helps maintain proper filter pressure while allowing trapped air to vent from the filter tank.
• Durable elastomer construction resists pool chemicals, water exposure, and compression wear.
• Precision-manufactured dimensions ensure proper fit on compatible Pentair air bleed assemblies.
• Ideal replacement component during filter servicing when existing O-rings become worn, cracked, or flattened.
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Product Overview
The Pentair 154661 air bleed adapter O-ring is an essential sealing component used in the air relief system of Triton sand filters and similar Pentair filtration equipment. Installed on the air bleed adapter fitting, the O-ring provides the seal that prevents water leakage while the air relief assembly vents trapped air from the filter tank.
Proper air venting is critical for maintaining stable filter pressure and efficient water flow through the sand media. When the O-ring becomes worn or damaged, leaks can occur around the air bleed connection and reduce filtration efficiency. Replacing the O-ring restores a secure seal and helps ensure reliable operation of the filter air relief system.















