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 5855-01-323-3693
NSN 6645-01-600-2080
NSN 5920-00-541-1119
NSN 6110-01-430-3684
NSN 5990-01-380-7815
NSN 5930-00-160-1754
NSN 5855-01-288-6341
NSN 5965-01-146-9162
NSN 6150-01-270-3742
NSN 6110-00-904-3328
NSN 5920-01-200-6655
NSN 6645-01-409-2003