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 5855-00-904-9572
NSN 5925-00-259-2098
NSN 2925-01-430-4206
NSN 2925-01-511-2667
NSN 5999-01-154-4836
NSN 4140-01-259-4149
NSN 6240-00-691-1397
NSN 5855-01-423-1768
NSN 5985-01-191-8311
NSN 6685-01-063-8297
NSN 5996-01-170-0262
NSN 6110-00-218-4737