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 6645-01-421-2445
NSN 6650-01-142-0953
NSN 5998-01-514-5199
NSN 6685-00-842-5399
NSN 5910-00-660-9464
NSN 5965-00-913-9545
NSN 6650-01-619-9986
NSN 6610-00-079-1508
NSN 5999-00-934-8747
NSN 5905-01-621-8483
NSN 5935-00-622-0125
NSN 6620-00-834-9430