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 6150-01-301-1102
NSN 5905-01-543-9033
NSN 5910-00-069-9127
NSN 5965-01-656-5303
NSN 5855-01-500-6617
NSN 6240-01-364-2305
NSN 6240-00-246-6201
NSN 6150-01-059-1206
NSN 5960-00-953-2103
NSN 6685-01-194-3931
NSN 6650-01-032-1786
NSN 5855-01-006-1827