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 5910-00-295-6194
NSN 6220-01-499-6157
NSN 5920-00-251-7615
NSN 5985-01-136-0199
NSN 4140-01-564-0950
NSN 6220-01-226-5292
NSN 5965-00-403-7497
NSN 6130-00-924-6238
NSN 6620-00-054-4778
NSN 5935-00-705-2786
NSN 5920-00-175-7987
NSN 6135-01-444-6824