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 5905-00-803-7811
NSN 6685-01-035-9238
NSN 5960-01-578-5537
NSN 5905-01-390-8279
NSN 5895-00-680-9784
NSN 5915-00-958-5748
NSN 6130-01-415-3345
NSN 5910-01-039-8368
NSN 6105-00-384-1693
NSN 5985-01-465-1265
NSN 6135-01-069-2482
NSN 6150-01-203-4761