6540-521 O-Ring FootWell Light Assembly/Jacuzzi Valves
O-Ring: 2.44OD x 1.96ID x .120CS
Used on the Following Sundance Spas Light Assemblies:
2015-2023 880 Series
2015-2018 Select Series
2015+ 780 Series
Used on the Following Jacuzzi Hot Tubs Light Assemblies:
2015+ J-LX Series
2015+ J-500 Series
2019+ J-485 & J-475,
2018+ J-445 & J-435
2020+ J-495 & J-425
09/2015-2018 All J-400 Series
2019 J-415, J-425, & J-495 (Incompatible with J-445 & J-435 Prior to 2018+)
2016-2024 J-300 Series
Used on the Jacuzzi Hydesoothe Valve 2020+ J-300 Series
Used on the Jacuzzi Waterfall Valve 2024+ J-300 Series
