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 5998-01-269-0077
NSN 2925-01-446-0525
NSN 6135-01-518-4507
NSN 6150-01-363-0835
NSN 6145-01-607-3551
NSN 6645-00-303-7698
NSN 5975-00-835-7753
NSN 5835-01-116-2369
NSN 5910-01-500-1977
NSN 5999-00-333-9032
NSN 5855-01-398-0090
NSN 5975-01-454-5607