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 5910-01-041-5369
NSN 6135-00-191-6444
NSN 5965-01-038-8081
NSN 5925-01-219-7227
NSN 6145-01-011-1917
NSN 5920-00-577-0191
NSN 6650-00-018-7298
NSN 5985-01-218-9970
NSN 5915-00-938-1139
NSN 5835-00-198-4936
NSN 5915-01-240-3022
NSN 5925-00-533-1547