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 6220-00-218-0857
NSN 5905-00-760-1207
NSN 6105-01-649-9841
NSN 2925-00-063-5898
NSN 6610-00-845-1070
NSN 6685-00-794-6435
NSN 6685-01-190-0871
NSN 6105-01-231-4342
NSN 5925-00-114-2253
NSN 5945-01-609-4660
NSN 5895-01-551-2142
NSN 6135-01-019-7687