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 6220-01-629-2636
NSN 6240-01-626-1075
NSN 6240-01-364-1682
NSN 2925-01-175-1217
NSN 5999-01-436-9036
NSN 5996-01-605-0950
NSN 6150-01-195-8486
NSN 5905-01-425-5214
NSN 6240-01-619-8316
NSN 5925-00-010-7490
NSN 6105-01-522-1880
NSN 6110-01-257-4563