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 6130-00-931-9567
NSN 5915-01-573-5980
NSN 5960-01-350-2925
NSN 5925-00-812-1987
NSN 6145-01-042-2958
NSN 5975-01-609-6688
NSN 5975-01-152-2635
NSN 6620-01-296-0871
NSN 5910-01-516-3787
NSN 6650-01-207-0829
NSN 4140-00-203-3870
NSN 6320-00-036-3688