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 5996-00-220-9414
NSN 2925-01-620-6812
NSN 5910-01-085-1204
NSN 5895-00-186-2953
NSN 6150-00-740-8011
NSN 5999-01-069-3371
NSN 5925-00-325-4424
NSN 5965-01-511-1997
NSN 5915-00-323-1262
NSN 5985-01-266-3562
NSN 6110-00-427-4454
NSN 6220-00-758-2378