Material Upgrades

Black Oxide Coating

Enhanced Corrosion Resistance: Black oxide forms a protective surface layer that helps prevent rust and oxidation, increasing the lifespan of the part — especially in humid or corrosive environments.

Reduced Wear: The coating reduces friction between metal surfaces, minimising wear and tear. This is particularly beneficial for bearings that operate under constant motion and load.

Improved Durability: By creating a stable surface film, black oxide increases resistance to fatigue and mechanical damage.

Reduced Service Time: Less likely to fuse or seize within the frame or headset housing, allowing for easier removal and replacement when required.

Stainless Steel

High Chromium Content (16–18%): Chromium creates a natural protective layer, giving stainless steel excellent resistance to corrosion, oxidation, and rust.

Corrosion Resistance in Wet Conditions: 440C stainless steel performs exceptionally well in wet or marine environments where standard steels would quickly corrode.

High Hardness: After heat treatment, 440C achieves very high hardness (Rockwell upper 50s to low 60s), improving wear resistance and longevity under heavy loads.

Reduced Service Time: Less prone to fusing to the frame or headset housing, allowing for easier bearing replacement during servicing.

blueseal Bike Bearings™ are bicycle specific bearings

Close Contact 2RS LLB Seals

blueseal Bike Bearings™ use top-quality LLB 2RS close-contact rubber seals. The tighter the seal is to the inner bearing race, the harder it is for water and dirt to get in — and the harder it is for grease to get out.

Max. Fill Premium Grease

Standard bearings contain a small amount of basic grease (around 20%), offering limited protection against corrosion, rain, and dirt ingress.

blueseal Bike Bearings™ contain the maximum fill of Mobil waterproof grease possible, without compromising the function of close-contact rubber seals.

ABEC 3 as Standard

Most non-bike-specific bearings are ABEC 1. blueseal Bike Bearings™ are ABEC 3 rated, running smoother and lasting longer.

Designed For Bicycles

These are not general-purpose industrial bearings — blueseal Bike Bearings™ are engineered specifically for bicycles, optimised for load, smoothness, and durability. They outperform standard bearings in both efficiency and lifespan.