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 5975-00-996-9153
NSN 5895-00-983-6580
NSN 5975-01-397-4116
NSN 5960-00-222-7772
NSN 6620-01-386-5914
NSN 6650-01-548-0297
NSN 5925-01-311-9918
NSN 6150-00-052-0805
NSN 6220-01-354-3084
NSN 5855-01-246-4274
NSN 5998-00-661-0380
NSN 5999-01-543-7215