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 5998-01-069-3254
NSN 6110-00-299-3553
NSN 2925-01-472-4423
NSN 6685-01-510-9386
NSN 6620-01-622-9976
NSN 6650-01-468-9093
NSN 6220-01-313-0094
NSN 5930-01-502-1655
NSN 5895-01-196-4845
NSN 6220-00-247-4859
NSN 5930-01-420-6183
NSN 5910-01-285-2470