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 6135-01-313-8323
NSN 6135-01-501-5376
NSN 6145-01-104-5084
NSN 6105-00-200-8074
NSN 6110-00-932-5257
NSN 6220-00-528-7752
NSN 6320-00-831-2227
NSN 6130-01-583-9874
NSN 5925-01-085-5526
NSN 5905-01-428-7305
NSN 6240-00-617-0578
NSN 6110-00-392-6173