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 6620-01-184-3193
NSN 6150-01-165-7822
NSN 5960-01-029-2940
NSN 5965-01-577-1984
NSN 5910-01-006-6876
NSN 6320-01-039-5891
NSN 5985-01-569-1026
NSN 6150-01-499-0659
NSN 6240-00-600-7138
NSN 6135-01-648-4875
NSN 5895-00-368-9243
NSN 5996-01-054-3226