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 5920-00-617-2084
NSN 5950-00-229-1984
NSN 5910-00-882-8580
NSN 5945-01-580-2968
NSN 5935-01-046-6930
NSN 6150-01-209-3474
NSN 6650-00-847-3492
NSN 6685-01-642-1738
NSN 6645-01-437-7770
NSN 5930-01-539-7317
NSN 6320-01-476-7702
NSN 6620-00-411-4983