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 5905-01-426-1579
NSN 5965-01-644-3258
NSN 5996-01-194-4498
NSN 5960-01-027-4927
NSN 5975-00-424-3403
NSN 5895-01-580-3060
NSN 6610-00-950-7105
NSN 5835-00-787-8122
NSN 6240-01-026-0032
NSN 6610-01-381-0652
NSN 5965-01-285-0456
NSN 4140-01-597-2287