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 5996-01-021-8752
NSN 6685-01-192-3051
NSN 5990-00-797-7649
NSN 5999-01-371-3169
NSN 2925-01-583-5619
NSN 6145-00-172-6488
NSN 6645-00-145-6411
NSN 5998-00-184-9495
NSN 6110-00-512-7845
NSN 5999-01-489-1072
NSN 5998-01-467-9447
NSN 5985-00-811-7472