Nylon Flange used for mounting the S3 type sender or the S3H holding tank (black water) sender.1 ¼” BSP thread and 5 hole equal patternConverts 5 hole bolt-down pattern to 1 ¼” BSP threadSupplied with Nitrile GasketHole size – 5mmFitted to topside of tank to create 1 ¼” BSP thread.The FL-3 can be used, if you don’t need the under-ring FLS-U. It has larger screw holes, so larger screws can be used, if needed.This flange is used to mount the S3 type sensor in the tank. A nitrile rubber gasket is included.For mounting in tanks with a thin top it is recommended to use an HFL flange or FL-2 flange together with an FLS-U inner ring to secure against leaks. The FL-2 has a standard SAE-5-hole pattern.
