Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PYRAMID 80 found under Plastic Mix Refractory by Interpace Corp. The National Stock Number assigned to this part is 9350008715784, and the Federal Supply Class is 9350 Refractors And Fire Surfacing Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like PYRAMID 80.