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 5905-00-892-8951
NSN 4140-01-168-4308
NSN 5990-00-953-9916
NSN 6685-00-676-6320
NSN 6135-00-539-8088
NSN 6135-00-851-8575
NSN 6645-01-611-9391
NSN 5960-00-161-9345
NSN 5935-00-419-0121
NSN 2925-01-512-4682
NSN 5990-01-335-7948
NSN 6650-01-485-3444