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 5935-01-110-9676
NSN 5950-01-431-0896
NSN 6620-01-029-3705
NSN 5925-00-155-2587
NSN 5920-00-972-7203
NSN 5975-01-074-6890
NSN 5905-00-960-5907
NSN 6105-01-018-0032
NSN 6220-01-422-1429
NSN 5905-01-580-1712
NSN 5945-01-182-2460
NSN 5855-01-366-2429