6903 Premium Bearing | CONTACT SEAL LLU | NTN

Inner Diameter x Outer Diameter x Depth: 17 x 30 x 7mm
Used on: Wheels
Brand: NTN
Seals: LLU contact seals are a closer fitting seal to rotating parts, and thus provide better protection against dirt and moisture ingress. Use where bearing longevity is more important and/or you frequently use your bike in harsh conditions. If racing or chasing watts is your priority then our non-contacting low friction seal version of this bearing (LLB Seals) might be more appropriate.