The APC APCO2053 replacement is a durable rubber O-ring that seats between the filter tank body and lid to create a water-tight seal.

Replacement for the following:
• D.E. filter models FNS 24, FNS 36, FNS 48, and FNS 60

Specifications:
• Part number: APCO2053; O-200; 195008 
• Material: Rubber
• Diameter: 18"