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 5975-00-116-0803
NSN 5935-01-213-5452
NSN 6645-00-542-1734
NSN 5910-01-315-1289
NSN 6105-00-357-1801
NSN 5895-00-061-7192
NSN 6645-01-544-9475
NSN 5920-01-324-8493
NSN 5895-01-334-8368
NSN 5996-00-350-5516
NSN 2925-01-068-3844
NSN 5910-01-194-9782