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 5985-00-003-5344
NSN 6320-00-779-5923
NSN 5935-00-608-5357
NSN 4140-00-900-6102
NSN 5925-00-061-3209
NSN 5985-00-279-1493
NSN 5910-00-419-6335
NSN 6685-01-154-3033
NSN 6135-01-446-8310
NSN 5990-00-932-3070
NSN 2925-01-068-3844
NSN 5930-01-319-8332