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 6645-01-351-6900
NSN 5835-00-858-9128
NSN 5895-01-440-2052
NSN 6135-01-104-3790
NSN 6105-01-381-2496
NSN 6320-00-456-2092
NSN 5920-00-351-8428
NSN 6150-00-468-1885
NSN 4140-01-163-4350
NSN 5915-01-432-6652
NSN 5895-01-010-1742
NSN 5925-01-284-7149