Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CAT 18.33.30-A POS 214 found under O Ring by Clorius Controls A S. The National Stock Number assigned to this part is 5331222690010, 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 CAT 18.33.30-A POS 214.