Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S3662-12-0.2.5IN-P N46-GRAFOIL found under O Ring by Mcjunkin Corp. The National Stock Number assigned to this part is 5331013827546, 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 S3662-12-0.2.5IN-P N46-GRAFOIL.