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 6150-01-423-1641
NSN 5910-00-952-2542
NSN 5990-01-499-6930
NSN 6240-01-025-5847
NSN 6240-01-446-6315
NSN 6110-01-622-7289
NSN 5965-00-137-9291
NSN 5945-01-217-8690
NSN 5999-00-521-9747
NSN 5915-01-261-1684
NSN 5910-01-646-1648
NSN 5975-00-715-3710