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 5960-01-563-6975
NSN 4140-01-206-4981
NSN 6135-01-487-6275
NSN 5985-01-197-8118
NSN 5999-00-648-9107
NSN 6110-01-531-6861
NSN 6105-01-512-9862
NSN 2925-01-187-5480
NSN 4140-01-213-2910
NSN 5998-01-063-7392
NSN 6220-01-262-2209
NSN 5945-01-337-3848