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 6130-00-138-3073
NSN 6150-01-178-2872
NSN 5915-00-082-7779
NSN 6645-01-218-5234
NSN 5855-00-228-8446
NSN 5996-01-472-2858
NSN 5920-00-985-5090
NSN 7035-01-085-5955
NSN 5895-00-283-5581
NSN 5945-00-276-9274
NSN 6645-00-565-1569
NSN 6685-01-453-2222