We need a new silicone rubber gasket to fit a 7.5 inch lense. Do not know manufacturer of light housing. The inground pool is 30 years old. Can not find a 7.5 inch silicone gasket.
We can’t guarantee the correct replacement gasket since we don’t know the make and model of the light. However, the Pac-Fab Hatteras was a popular light around the time frame of when your light was installed and it had a 7.5" lens. The gasket is part number 57-110-1272. Click Here to View the Hatteras Lens Gasket