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 6685-01-174-3818
NSN 5895-00-246-4415
NSN 6610-00-104-5704
NSN 5925-01-210-1678
NSN 6645-01-648-4439
NSN 5998-01-061-1334
NSN 6150-01-512-9263
NSN 5945-01-294-1474
NSN 5930-01-463-9306
NSN 5965-01-540-3027
NSN 5935-00-050-6541
NSN 6130-01-627-3207