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 5835-01-454-1823
NSN 7035-00-232-4043
NSN 5915-01-230-0857
NSN 5925-00-290-4451
NSN 6150-00-353-7392
NSN 5915-00-945-8986
NSN 6110-00-284-1161
NSN 5960-01-435-1167
NSN 5945-01-421-1808
NSN 5975-01-049-7113
NSN 6685-00-483-2982
NSN 5925-00-910-3594