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 5920-01-500-1434
NSN 5960-01-297-2665
NSN 5999-01-343-3184
NSN 6685-00-684-7891
NSN 5835-01-162-8353
NSN 5965-01-199-4242
NSN 5960-01-411-5217
NSN 5920-01-338-8175
NSN 2925-01-113-6904
NSN 6145-01-229-5654
NSN 6105-00-527-2193
NSN 2925-01-139-7098