Upgrade or replace with confidence using this Aftermarket o-ring. Compatible with models including 6230PR, 6330PR, 6430PR, 6534PR, 6630PR, 6830PR, 6930PR. Interchangeable with OEM John Deere part number(s): CTS9780, R505452, STS9660, WTS9640, WTS9660, WTS9680. Designed to fit John Deere equipment and built for long-lasting performance.