This is the MEIOU HPS large-diameter NBR rubber oil seal (size 235x275x15, ADSL style) from MEIOU TECH — a purpose-built industrial sealing component engineered exclusively for Hagglunds Motor CA210 systems used in marine applications. Built with premium wear-resistant NBR material and a solid matte black finish, it carries the official DMHUI brand embossed mark for full quality traceability. Superior dust & impurity intrusion resistance: Blocks seawater grit, salt deposits