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 5965-00-812-9158
NSN 5998-00-529-2551
NSN 5910-00-415-8186
NSN 5925-00-523-2755
NSN 5965-01-208-3488
NSN 5965-01-579-1871
NSN 5975-01-083-6528
NSN 6610-01-372-5196
NSN 5985-01-170-4076
NSN 5930-00-982-4307
NSN 5960-00-279-1993
NSN 6105-01-380-9588