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 5945-01-121-8080
NSN 6220-01-186-9750
NSN 5975-00-074-2072
NSN 5998-00-850-2363
NSN 6645-01-607-7931
NSN 6145-00-613-8489
NSN 5975-00-808-9272
NSN 5945-01-444-9638
NSN 5985-01-200-5561
NSN 6110-01-031-8808
NSN 4140-00-953-9335
NSN 6110-01-269-5812