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 2925-00-152-1825
NSN 5920-01-172-5748
NSN 5960-01-505-2426
NSN 5996-01-437-3998
NSN 5935-00-661-0825
NSN 5999-00-491-3186
NSN 6685-00-587-0866
NSN 5930-01-234-0572
NSN 5945-01-463-2802
NSN 5895-01-270-4499
NSN 5960-00-450-5524
NSN 6135-00-840-6451