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 5920-00-504-0564
NSN 5920-01-268-7258
NSN 5999-01-025-9717
NSN 6645-01-177-6021
NSN 6145-00-604-6916
NSN 5985-01-520-4973
NSN 5960-01-410-8177
NSN 6650-01-145-5173
NSN 6110-01-042-4117
NSN 4140-01-207-8528
NSN 6240-00-861-2592
NSN 5945-01-364-8496