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 5960-01-224-0414
NSN 6620-00-383-8740
NSN 5905-00-841-9409
NSN 6135-01-394-4160
NSN 6135-01-547-6822
NSN 6130-01-463-2539
NSN 6645-01-105-2239
NSN 5990-00-492-5063
NSN 5895-01-520-5577
NSN 6105-01-573-7330
NSN 5960-01-100-5065
NSN 6610-01-182-1182