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 5925-01-648-8151
NSN 6220-00-070-4256
NSN 5945-00-896-2213
NSN 5965-01-007-1963
NSN 5895-01-578-0408
NSN 6610-01-100-3662
NSN 6685-01-481-1332
NSN 5930-00-005-2501
NSN 6150-00-006-4231
NSN 5960-00-020-0074
NSN 5835-00-092-1136
NSN 6685-00-361-1798