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 6135-00-635-9187
NSN 5996-00-959-2326
NSN 5910-01-093-4369
NSN 4140-01-207-8528
NSN 5920-00-477-6451
NSN 5910-01-197-2848
NSN 4140-01-580-2319
NSN 7035-01-123-8723
NSN 5920-01-547-0716
NSN 4140-01-174-6309
NSN 5925-01-537-8655
NSN 5895-01-426-2980