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 2925-00-196-9003
NSN 6105-00-107-1722
NSN 5935-01-657-2937
NSN 6105-01-514-2294
NSN 6150-01-393-7607
NSN 6105-01-382-9690
NSN 5990-01-517-7848
NSN 5905-01-168-8793
NSN 5930-01-648-2582
NSN 5895-00-925-8642
NSN 6240-01-401-5340
NSN 6110-00-482-3372