A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6320-00-433-2773
NSN 6620-01-495-7446
NSN 5990-00-932-3070
NSN 5960-01-539-1956
NSN 5920-01-555-6944
NSN 6150-01-255-6964
NSN 5910-00-858-5184
NSN 6105-01-461-9317
NSN 5915-01-233-9651
NSN 5905-01-158-0284
NSN 6240-01-422-6916
NSN 5855-01-487-8872