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 6150-00-263-3451
NSN 5835-00-816-0394
NSN 5935-01-153-2617
NSN 5999-00-344-1909
NSN 2925-01-492-2589
NSN 5990-00-076-9839
NSN 5999-00-241-6582
NSN 6610-01-077-6783
NSN 5960-01-323-3143
NSN 6685-01-426-8929
NSN 5945-01-266-0848
NSN 6685-01-420-7407