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 5925-01-108-0077
NSN 6105-01-165-5057
NSN 2925-01-657-9741
NSN 6220-01-370-2059
NSN 5930-00-079-0171
NSN 6150-00-539-9812
NSN 6105-01-537-0105
NSN 6240-00-797-3750
NSN 6685-01-064-9480
NSN 5925-00-069-2442
NSN 6220-00-149-0977
NSN 5996-00-562-3838