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 6685-01-559-1638
NSN 6685-01-382-9459
NSN 5905-01-297-5884
NSN 6610-00-902-7505
NSN 6220-01-123-9290
NSN 5998-00-950-0565
NSN 5999-00-007-5210
NSN 5905-00-364-7790
NSN 6105-01-425-7423
NSN 5935-01-561-8669
NSN 4140-00-640-6608
NSN 7035-00-104-5506