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 5950-01-326-0807
NSN 5996-01-286-4935
NSN 5999-01-644-0269
NSN 5895-00-459-9496
NSN 2925-01-027-1293
NSN 5996-01-050-3141
NSN 6650-01-029-5414
NSN 6110-00-239-6337
NSN 5905-00-189-0034
NSN 6135-01-327-2092
NSN 7035-01-359-6108
NSN 5935-01-354-7279