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 6685-01-421-3611
NSN 5985-01-262-3890
NSN 5905-01-422-3229
NSN 6130-01-414-7084
NSN 5996-00-615-9665
NSN 6105-00-505-8842
NSN 6150-00-827-9005
NSN 5935-01-596-0339
NSN 5910-00-076-6493
NSN 5975-01-397-5431
NSN 5895-00-438-8477
NSN 5999-00-675-1168