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 5965-00-857-4014
NSN 6220-01-473-4533
NSN 5945-01-295-3583
NSN 6150-01-412-9885
NSN 5965-01-260-0780
NSN 5910-01-438-9209
NSN 5985-01-507-5178
NSN 5835-01-332-2867
NSN 5975-01-481-1209
NSN 6135-01-521-0378
NSN 5975-01-264-3927
NSN 5999-01-108-5695