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 5895-01-296-9922
NSN 5998-00-148-3775
NSN 6650-01-503-1144
NSN 5965-00-910-3233
NSN 6610-01-061-1875
NSN 5945-01-406-4352
NSN 6130-01-208-1861
NSN 6610-01-364-0294
NSN 6240-01-268-4035
NSN 5950-01-333-0326
NSN 5990-01-144-6994
NSN 5855-01-513-1859