Hebei Hankai custom oil seals
Oil seals are typically made of rubber or synthetic materials that are resistant to oil, heat, and pressure. They are designed to withstand the harsh conditions within an engine or machinery, such as high temperatures and varying levels of pressure. The seal is usually placed in a housing or a groove in order to effectively seal the gap between two moving parts.
what is the function of oil seal

In addition to their self-drilling feature, these screws also come with various security enhancements to prevent tampering. For example, some self-drilling security screws are made with a unique head design that requires a special tool, such as a security bit or driver, to tighten or loosen. This makes it nearly impossible for someone without the proper tool to remove the screws, adding an extra layer of security to the installation.
self drilling security screws

In DIY projects, these screws are popular for woodworking applications, where quick fastenings are essential. Whether constructing furniture, building decks, or performing home repairs, the ease of use provided by self-drilling screws helps amateur builders complete their projects with greater efficiency and confidence.
13mm self drilling screws

