Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A1-81886 ITEM 27 found under Gasket by Evoqua Water Technologies Llc. The National Stock Number assigned to this part is 5330015070945, and the Federal Supply Class is 5330 Packing And Gasket Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like A1-81886 ITEM 27.