Military-Fasteners.com MS28775-211 O-RING SPEC Description: Inner diameter: 0.796, thickness: 0.139", preformed packing hydraulic o-ring" MS28775-211 Manufacturer certs (CofC) are provided free on all orders Order this part online Additional Information Gov. Issued Name: O-RING NSN: 5331-00-559-6182 NIIN: 005596182 FSC: O Rings / 5331 Associated NSN(s): 5331-00-171-5740 5331-00-196-5379 5331-00-292-0569 5331-00-801-4417 5331-00-957-3272 5331-01-066-9237 5331-01-191-3170 5331-01-202-8354 5331-01-229-8661 5331-01-249-9899 Schedule B: 4016.93.0000, Gaskets, washers and other seals, of vulcanized rubber other than hard rubber National Motor Freight: 194120, Washers / Gaskets / Pckg Dvcs Noi