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 6145-01-511-9871
NSN 5920-00-857-8933
NSN 5950-00-787-7292
NSN 5835-01-162-8353
NSN 5950-01-098-8634
NSN 6105-01-410-7493
NSN 5895-01-622-3493
NSN 5920-01-076-5467
NSN 5895-00-319-8451
NSN 5935-00-805-7783
NSN 6220-01-290-3081
NSN 5930-01-549-6170