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 5999-00-821-9098
NSN 6105-00-618-0153
NSN 5945-00-826-7739
NSN 5985-01-475-0223
NSN 4140-01-343-0501
NSN 6620-00-193-9503
NSN 6110-00-906-2540
NSN 6645-00-089-8842
NSN 6610-00-963-9435
NSN 6650-01-162-8324
NSN 4140-00-601-5543
NSN 5925-01-560-0827