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 6130-00-329-3044
NSN 4140-01-031-0286
NSN 6685-00-945-4979
NSN 5930-01-251-2764
NSN 6105-01-333-6778
NSN 5855-00-912-3885
NSN 5985-01-612-1004
NSN 5910-01-461-7800
NSN 5945-01-478-3122
NSN 5910-01-061-1963
NSN 5999-01-577-7689
NSN 6220-01-491-5863