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 7035-00-108-4421
NSN 5990-00-539-7859
NSN 5985-01-068-1940
NSN 5999-01-232-6836
NSN 6150-01-207-0896
NSN 5855-01-058-5576
NSN 6110-00-596-9124
NSN 6240-01-048-3330
NSN 6105-00-205-0655
NSN 5985-01-050-1216
NSN 5975-01-255-1744
NSN 6135-01-164-3561