Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PT .375-13.5 DC7 found under O Ring by Glentech Inc. The National Stock Number assigned to this part is 5331014193880, 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 PT .375-13.5 DC7.