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 6645-01-007-5295
NSN 5945-01-237-3920
NSN 5996-01-186-4790
NSN 6320-01-600-5808
NSN 5996-01-260-2993
NSN 2925-00-540-9918
NSN 5945-01-171-0130
NSN 6220-01-383-7764
NSN 6650-01-473-4353
NSN 6320-01-332-1977
NSN 5910-01-586-1918
NSN 6145-00-299-7757