rotary lip seal

The primary function of axle hub seals is to retain lubrication. Proper lubrication is essential for the smooth operation of moving parts, reducing friction and wear. Without effective sealing, the lubricant can leak out, leading to inadequate lubrication of the gears and bearings, which may cause premature wear and eventual failure of the components.
axle hub seal

The dimensions of solar panels directly influence their energy output. Larger panels can capture more sunlight due to their increased surface area, thereby generating more electricity. However, larger panels are not always the best option for every situation. In urban environments where space is at a premium, smaller panels may be more appropriate, despite potentially lower overall energy production.
solar panel dimensions