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Shaft oil seals typically consist of a flexible sealing lip made from elastomeric materials such as rubber, polyurethane, or silicone, encased in a sturdy outer shell. The sealing lip makes contact with the rotating shaft, creating a barrier that effectively retains lubricants while blocking unwanted particles. The design may include additional features such as garter springs to maintain contact with the shaft and improve sealing effectiveness over time.
shaft oil seal

Ein wesentlicher Vorteil der Trommelbremse ist ihre Fähigkeit, eine starke Bremskraft auch bei geringem Gewicht zu erzeugen. Zusätzlich bieten sie eine hervorragende Wärmeableitung, was bedeutet, dass sie auch bei wiederholtem Bremsen nicht so schnell überhitzen. Dies ist besonders wichtig in Situationen, in denen häufiges Bremsen erforderlich ist, wie zum Beispiel beim Bergabfahren.
drum brake definition

One of the key benefits of drum brakes is their enhanced heat dissipation capabilities. The enclosed design allows for a larger surface area to dissipate heat generated during braking, making them particularly effective in applications where braking is frequent and intense. This characteristic is especially useful during the landing phase, where an aircraft must rapidly decelerate from high speeds.
aircraft drum brakes
