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 5930-00-925-4220
NSN 7035-00-902-8995
NSN 5985-01-319-5158
NSN 6650-01-431-8309
NSN 6110-01-437-0511
NSN 6240-01-415-6004
NSN 2925-00-504-2363
NSN 5910-00-060-6769
NSN 6145-01-364-9896
NSN 5960-00-269-4762
NSN 5835-01-067-6619
NSN 5855-01-018-1247