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 6620-00-280-2874
NSN 5996-00-221-5897
NSN 6650-01-588-9061
NSN 5975-01-025-1870
NSN 5945-01-087-0837
NSN 6105-01-469-6855
NSN 6110-00-530-3779
NSN 5910-01-029-4709
NSN 5960-00-280-4712
NSN 5930-01-301-7635
NSN 5910-01-011-3580
NSN 6320-00-025-9910