rotary shaft seal
Oil seals work by creating a tight seal around the rotating shaft. This prevents oil and other fluids from escaping while allowing the shaft to rotate smoothly. The seal is usually made up of a lip that fits snugly against the shaft, preventing any leaks from occurring. Some oil seals also have additional features, such as springs or gaskets, to provide extra support and ensure a secure fit.
oil seal for rotating shaft

Regular maintenance of brake drums is critical to ensure optimal performance and safety. Over time, brake drums can experience wear and tear from the heat generated during braking, which can lead to warping and cracking. Fleet operators should regularly inspect brake drums for signs of damage, including scoring or excessive wear. In most cases, it is advisable to replace brake drums when they are worn beyond the manufacturer's specifications.
truck brake drum
