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 5835-00-851-6470
NSN 6320-01-006-6138
NSN 4140-00-535-6499
NSN 5950-00-069-5800
NSN 4140-01-547-9666
NSN 5965-01-331-1644
NSN 6610-01-356-0323
NSN 5985-00-584-3795
NSN 6110-00-878-5948
NSN 5905-01-611-1197
NSN 7035-00-096-9986
NSN 5998-01-399-0615