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 5910-01-568-9354
NSN 5975-01-344-0546
NSN 5935-01-361-1201
NSN 5999-00-542-9920
NSN 5945-00-600-1638
NSN 6240-01-193-8752
NSN 6645-01-430-4125
NSN 5965-01-008-5351
NSN 5835-00-341-5441
NSN 6110-00-607-7987
NSN 6610-01-444-4851
NSN 6685-01-389-4130