RANMEI 2 Pcs Bike Bicycle Fork Sponge Foam Rings Oil Seal for RockShox Magura etc. - Walmart.com
RockShox RockShox Dust Seal/Foam Ring Set: Black Flangeless 32mm x 41mm Seal Fits- Bluto/RS-1/SID B1 (2017+) and 32mm Boost Forks - Valley Bike and Ski Werks | Hadley, MA