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 5910-01-408-5589
NSN 6130-01-082-9124
NSN 6620-01-415-5803
NSN 5895-00-827-0240
NSN 4140-01-143-0169
NSN 6645-01-131-9664
NSN 6130-01-616-6017
NSN 6610-01-475-9020
NSN 6645-00-019-0554
NSN 5998-00-135-5764
NSN 6620-00-586-6460
NSN 5975-01-400-0627