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 5910-01-556-8008
NSN 5990-01-100-7231
NSN 5895-00-927-9909
NSN 6610-00-994-0190
NSN 5965-01-502-9684
NSN 5915-01-269-0885
NSN 5920-01-193-5210
NSN 5935-01-542-3001
NSN 5930-00-826-0782
NSN 6320-00-336-9123
NSN 5905-01-215-1896
NSN 5920-00-947-7393