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 5985-01-585-0659
NSN 5910-00-737-8234
NSN 5835-01-422-2399
NSN 6145-01-098-3899
NSN 6620-01-154-4209
NSN 2925-01-391-9247
NSN 5960-01-567-1096
NSN 5905-01-451-4012
NSN 6240-01-017-1049
NSN 5835-00-707-6266
NSN 5895-01-169-2639
NSN 5930-01-261-1959