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 5975-01-658-9194
NSN 6240-01-455-3786
NSN 5925-00-795-4958
NSN 5990-00-905-1303
NSN 5998-01-471-0544
NSN 6145-01-223-6996
NSN 5998-01-061-1334
NSN 5960-01-054-9639
NSN 5996-01-495-7451
NSN 5905-01-082-9499
NSN 2925-01-327-3069
NSN 5920-00-199-9514