Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PW 9720 00 found under Electrical Unit Sulfur Dioxide M by Philips Electronic Instruments Inc. The National Stock Number assigned to this part is 6630010343652, 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 PW 9720 00.