>> Search results for: ECT212 NSN Search Results National Stock Number (NSN) Description 4940-00-964-1704, 4940009641704 TUBE AND FLUE CLEANER,BOILER,INT 4940-21-109-6159 , 4940211096159 TUBE AND FLUE CLEAN 1 Related Inventory Search You can use this search box to continue searching. Search parameters can include any combination of characteristics, specifications, description, partial part numbers, NSN or other stocking number. Special characters are not needed and are automatically stripped before searching. Do you sell this part? Become part of our growing pool of certified suppliers. Send Information