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 5960-01-461-1384
NSN 2925-01-159-0506
NSN 6220-00-378-1484
NSN 6240-01-131-9580
NSN 5960-01-395-9834
NSN 5915-01-014-7875
NSN 6145-00-629-2801
NSN 6150-01-426-8986
NSN 5998-01-272-8037
NSN 4140-01-451-7829
NSN 5855-01-537-8783
NSN 6620-01-438-0415