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 5910-00-528-4311
NSN 6620-01-486-8002
NSN 6620-01-590-6283
NSN 5895-00-591-8078
NSN 6110-01-542-7901
NSN 5999-01-661-1819
NSN 5910-01-422-4924
NSN 6645-00-767-6307
NSN 5930-01-452-8577
NSN 5999-01-288-0297
NSN 7035-01-440-7055
NSN 5960-01-437-3088