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 5965-00-455-7581
NSN 5990-00-239-3432
NSN 5915-01-043-3512
NSN 2925-01-591-4030
NSN 5965-01-088-5414
NSN 6130-01-364-3778
NSN 4140-01-604-0564
NSN 6110-00-269-2696
NSN 6685-00-575-4647
NSN 6320-01-478-5871
NSN 5965-01-601-8507
NSN 5915-01-139-5277