Seals: LLB or 2RS. At Enduro they utilize several types of grease depending on the projected application of the bearing. They also fill both sides of the bearing for maximum lubrication, unlike industrial bearings which are only single filled.
Enduro Bearings 6803 LLB - ABEC 3
6803 LLB | 17 x 26 x 5mm | Blueseal Bike Bearings
6902 LLB | Wheel Bearing | by Enduro
6903 LLB | Wheel Bearing | by Enduro
18307 LLB | Wheel Bearing | by Enduro
6802 LLB | Wheel Bearing | by Enduro