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 6620-01-106-9100
NSN 5965-00-549-0220
NSN 5950-01-555-8152
NSN 5925-01-053-6519
NSN 6220-01-110-0728
NSN 6110-00-960-7341
NSN 5925-00-804-5814
NSN 5985-01-397-3322
NSN 6110-00-829-1052
NSN 5990-01-238-1975
NSN 5855-01-425-1330
NSN 5855-01-492-1461