Seals: LLU. There are many types of seals. Enduro’s seals are usually either LLU (usually the MAX type bearings) or LLB (better for hubs). The outer sealing lip repels dirt and water while the inner sealing lip retains the grease.
Enduro Bearings 6903 LLU Max-E C3 Bearings New
6903 LLU MAX | 17 x 30 x 7mm | Blueseal Bike Bearings
MRA 15267 LLU MAX - ABEC 3 MAX (Angular Contact) - 15x26x7
3902 LLU Max - ABEC 3 Max - Double Row (Radial) - 15x28x10
398 LLU MAX-EE - ABEC 3 MAX - Double Row (Radial) - 8x19x10/13
R 8 LLU Max - ABEC 3 Max (Radial) - 1/2 x 1 1/8 x 5/16
