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 6110-01-390-6748
NSN 6135-01-657-0554
NSN 6105-00-868-6015
NSN 5905-01-211-8314
NSN 5945-01-250-2518
NSN 5998-00-163-4115
NSN 5965-01-068-2714
NSN 5960-01-654-4353
NSN 5945-00-893-1366
NSN 5996-01-305-2738
NSN 6320-01-160-8578
NSN 5990-01-219-9018