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 5999-01-082-8860
NSN 5835-01-056-9303
NSN 5985-01-448-9071
NSN 6685-00-506-0090
NSN 6645-01-633-1852
NSN 5925-00-443-4093
NSN 7035-01-003-9142
NSN 5895-00-984-2139
NSN 6645-01-492-9823
NSN 6240-01-226-8866
NSN 6110-00-995-0133
NSN 6110-00-424-4557