Check the listing for details. 1968 Williams Hayburners II Pinball Machine Rubber Ring Kit. Condition: New. Listed at 28.45 USD. Hayburners II. Complete Rubber Ring Kit for your 1968 Williams Hayburners II pinball machine. If you want to really make your Pinball POP! They include rubber rings, springs, pinballs, bulbs, and playfield cleaner.