If you could provide more details or clarify what WUNF 400 refers to, such as:
If the cylinder rod has a damaged chamfer or sharp edge at the end of stroke, it will literally chisel the lip off the WUNF 400. Deburr the rod end or add a sacrificial wear ring. wunf 400
? Knowing the industry or context would help narrow this down. Ohana Petite - Wunf 400 ^new^ If you could provide more details or clarify