The 1002264 Seal Inside (Drilled) is an inner wheel hub grease and contamination seal used in aircraft landing gear wheel assemblies, particularly in Wipaire/Wipline amphibious and floatplane wheel systems.

It is a variation of the standard inner seal (1001996), but with drilled features that allow it to interface with specific wheel hub configurations—typically for:

locking / retention geometry
grease distribution or venting paths
alignment with modified hub assemblies
This seal is installed on the inboard side of the wheel bearing assembly, where it helps maintain lubrication inside the hub while preventing water, dirt, and debris from entering the bearing cavity—critical for operations in wet environments such as amphibious aircraft.

Key features include:

Aircraft wheel hub inner bearing seal (drilled variant)
Designed for amphibious / floatplane landing gear systems
Maintains grease retention in wheel bearing cavities
Prevents contamination from water and debris ingress
Drilled configuration for specific hub/retainer compatibility
Used in Wipline wheel and brake assemblies (10000 / 13000 series families)
Works with tapered roller bearing systems (typical aviation wheel hubs)
Corrosion-resistant elastomer/metal reinforced construction (variant dependent)
Essential for bearing life in high-moisture environments