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 6110-01-261-3086
NSN 6645-01-646-2953
NSN 6240-00-717-0844
NSN 6610-00-963-9435
NSN 2925-01-157-9204
NSN 6150-00-768-1051
NSN 5960-01-524-8642
NSN 5905-01-113-6821
NSN 6645-01-607-7931
NSN 7035-00-513-9764
NSN 5905-00-326-2002
NSN 6610-00-161-7439