I do not know about the sling shot as I have not tried anything but my very old stock on black B/W- Midway rubber from 25 years ago. Shit is still great . But as far as the rest of the playfield for a location pinball Super Bands on every thing . The Super-Bands™ polyurethane last for a very long time . It is a bit bouncy for the post but it lasts . The Super Bands are great for the flipper bats . Super-Bands™ polyurethane will due the trick . It is the slings shot I am still trying to figure out. But for the rest of pinball Super-Bands™ polyurethane last the longest . In my opinion . Good luck .
Note Order extra sizes . I followed the STERN Star Trek LE rubber guild and it did not work on the left out lane as it was marked in manual . Be ready just in case some weird issue like this happens .