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 2925-00-343-3235
NSN 6145-00-663-6133
NSN 5905-01-527-7661
NSN 6645-01-152-1092
NSN 6650-01-011-3472
NSN 5965-01-625-9234
NSN 5950-01-475-3007
NSN 5965-01-337-5408
NSN 6145-01-608-6233
NSN 5975-00-523-2275
NSN 5895-01-376-0482
NSN 5975-01-113-5103