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 6130-01-031-5057
NSN 5930-01-206-4390
NSN 5930-01-265-0327
NSN 4140-01-313-9004
NSN 5920-01-212-9504
NSN 6130-01-056-5251
NSN 5895-01-601-6187
NSN 5915-01-613-6794
NSN 5910-01-353-0738
NSN 6610-01-284-6968
NSN 6150-01-602-8618
NSN 6620-01-034-4539