Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 505027-000 O-RI NG found under O Ring by Gw Technologies Pty Ltd. The National Stock Number assigned to this part is 5331001661011, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 505027-000 O-RI NG.