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 6220-00-249-9834
NSN 6240-01-283-0404
NSN 6105-00-926-7958
NSN 5950-01-421-3169
NSN 6685-01-457-6558
NSN 5930-01-324-3266
NSN 5965-01-594-1983
NSN 5950-00-469-3948
NSN 5905-01-304-0548
NSN 6610-00-448-1264
NSN 5950-00-543-0199
NSN 5910-01-206-9987