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 6650-01-143-4586
NSN 6685-00-161-5752
NSN 6135-00-168-3876
NSN 6620-00-360-1379
NSN 6645-01-200-5289
NSN 6150-00-233-6356
NSN 6645-00-050-3738
NSN 6320-01-204-2922
NSN 5965-00-689-1545
NSN 6650-01-569-3286
NSN 6685-00-108-6374
NSN 5925-01-406-3455