Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 22HL4CR found under Hose Preformed by Buckhorn Rubber Products Inc. The National Stock Number assigned to this part is 4720011689605, and the Federal Supply Class is 4720 Hose And Flexible Tubing. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 22HL4CR.