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 6130-01-176-0423
NSN 5925-00-502-9276
NSN 5835-01-352-7211
NSN 6610-00-995-6266
NSN 5975-01-487-5380
NSN 5950-01-070-8382
NSN 5960-00-624-0133
NSN 5945-01-290-3650
NSN 6130-00-467-5014
NSN 5895-01-633-0983
NSN 6135-00-491-9864
NSN 6685-00-151-5257