Pinball Life in the US has what you need. I just rebuilt the flippers on a SWT.
https://www.pinballlife.com/090-5032-ot-flipper-coil-for-sternsegadata-east.html
https://www.pinballlife.com/sega-nylon-flipper-bushing.html
https://www.pinballlife.com/new-style-flipper-rebuild-kit-left-and-right-flippers-for-sternsega.html