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 5905-00-654-3662
NSN 6650-00-885-3775
NSN 5960-01-560-1958
NSN 5999-01-378-8198
NSN 5905-00-030-3546
NSN 7035-01-304-0305
NSN 2925-01-394-9658
NSN 6650-01-160-1110
NSN 6240-00-943-7560
NSN 5985-00-675-5849
NSN 5920-00-578-0009
NSN 5990-01-004-6343