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 5935-00-259-3619
NSN 6645-01-334-0782
NSN 5965-01-095-1926
NSN 5998-00-661-0380
NSN 6610-01-650-6364
NSN 5990-00-251-0965
NSN 5905-01-415-6391
NSN 6320-00-681-1324
NSN 5960-00-421-1054
NSN 5905-01-033-3904
NSN 2925-00-684-7708
NSN 5985-00-274-4062