Hebei Hankai high pressure oil seal
Oil seals are generally constructed from materials that can withstand the specific chemical properties of the lubricant they are sealing. Common materials include rubber, silicone, and various elastomers. The design of an oil seal often incorporates a lip that rolls against a shaft or surface, creating a dynamic seal that can accommodate movement while maintaining its sealing capabilities.
dust seal vs oil seal

Beyond agriculture, iron barbed wire is extensively utilized in security. Prisons and detention facilities often deploy high-tension barbed wire at walls and checkpoints to deter escapes and unauthorized entries. The fear of entanglement in the sharp, pointed edges serves as a powerful psychological barrier against potential intruders. In urban settings, barbed wire is commonly seen topping fences around commercial properties, schools, and libraries, safeguarding these spaces from vandalism and theft. Its presence is a stark reminder of the balance between safety and invasion of privacy, raising discussions about its implications in urban landscape design.
iron barbed wire
