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 6645-00-211-6906
NSN 5985-01-459-8010
NSN 5855-01-519-2933
NSN 6150-00-411-2063
NSN 6110-01-410-8934
NSN 5996-01-422-8103
NSN 6320-00-886-9771
NSN 6145-01-280-4458
NSN 6685-01-548-0867
NSN 6620-00-234-8918
NSN 5965-00-815-2525
NSN 2925-00-010-9609