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 5905-01-268-9523
NSN 6645-01-456-0103
NSN 5920-01-572-7158
NSN 5960-01-595-6515
NSN 6610-01-361-4193
NSN 5925-01-370-4417
NSN 6150-00-530-3046
NSN 6145-00-468-3583
NSN 5996-00-829-6739
NSN 5975-01-026-1323
NSN 5998-00-781-3769
NSN 6620-01-023-2938