SKF 6308 hybrid ceramic deep groove ball bearing with 2RS1 contact seals on both sides and C3 internal clearance. Ceramic and electrically insulating bearings (Technique / Bearings / Bearings and accessories). Principal data: bore 40 mm, outside diameter 90 mm, width 23 mm. Supplied under manufacturer part number MRC.308SZZ-HYBÆ1, HS code 8482.10, country of origin United States.