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 5855-01-500-0449
NSN 5975-01-090-0802
NSN 5895-00-188-6798
NSN 5930-01-381-8138
NSN 6685-01-381-0445
NSN 5975-01-497-8183
NSN 5996-01-085-5031
NSN 5996-01-096-7175
NSN 5920-00-658-7219
NSN 6610-01-646-1609
NSN 5835-00-198-4936
NSN 6320-01-318-4935