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 6620-01-084-5112
NSN 5999-01-578-6827
NSN 6650-01-255-4046
NSN 6685-01-517-1090
NSN 5895-00-059-7516
NSN 6645-01-512-8472
NSN 5975-01-631-8357
NSN 6145-01-455-8785
NSN 2925-01-213-6622
NSN 5999-01-063-1870
NSN 7035-01-097-5054
NSN 6610-00-597-3095