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 5975-00-419-9812
NSN 6150-01-455-3573
NSN 5945-01-159-9534
NSN 6650-00-276-9838
NSN 6135-00-196-5267
NSN 6220-00-156-4469
NSN 5960-00-166-3008
NSN 6685-00-364-0821
NSN 6645-01-211-2111
NSN 5975-01-461-7852
NSN 5905-00-497-6323
NSN 5905-00-343-0670