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 6110-01-040-9797
NSN 5990-00-519-9974
NSN 5996-00-248-7061
NSN 5930-01-357-6121
NSN 5960-01-364-1318
NSN 5895-01-065-1123
NSN 6130-00-113-8291
NSN 5996-00-366-0233
NSN 6645-01-302-6243
NSN 5910-00-792-8182
NSN 5950-01-452-8190
NSN 5945-01-262-5414