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 6320-00-242-3300
NSN 5985-01-564-0952
NSN 5925-00-128-9376
NSN 6240-01-415-9991
NSN 6135-01-648-4875
NSN 6110-01-054-3032
NSN 5925-01-367-6118
NSN 4140-00-756-7135
NSN 6645-01-189-0275
NSN 6240-01-268-4035
NSN 5960-00-533-1125
NSN 5925-01-130-3573