The clay includes a handle, a cutting cone transported by the handle, and a seal sealing assembly, including a rigid seal ring with a length and short arm; used to provide a seal. A month ago

摘要

Earth Drill which comprises a Handle,A Cone Cutting carried by the handle Assembly and a Seal is a Dynamic seal with a radial surface of handle of interstitium; method to provide a Seal to a BarreNot of Earth.