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 5950-01-490-3502
NSN 5999-01-261-2266
NSN 5935-01-381-1149
NSN 5930-00-012-9835
NSN 6320-01-039-5891
NSN 6320-01-466-4175
NSN 5945-00-932-5219
NSN 5920-01-230-3035
NSN 5925-01-250-8447
NSN 5998-00-059-3587
NSN 5920-01-432-3062
NSN 5930-00-245-6509