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 5985-00-960-3151
NSN 5895-00-286-3788
NSN 6135-01-425-5553
NSN 5910-00-937-3993
NSN 6685-00-365-5572
NSN 6135-00-763-5793
NSN 5920-01-027-0660
NSN 6145-00-958-3662
NSN 5965-00-251-2529
NSN 7035-01-338-2994
NSN 6145-01-259-4530
NSN 5855-01-085-5354