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 6645-01-346-4505
NSN 5910-01-383-8428
NSN 6145-00-864-5334
NSN 5945-01-352-3246
NSN 6110-00-068-0786
NSN 6650-01-149-3224
NSN 6645-01-437-9017
NSN 6135-01-565-3284
NSN 6685-01-517-0877
NSN 6610-00-903-0714
NSN 5996-00-958-7965
NSN 6645-01-471-3578