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 5998-01-222-1279
NSN 6220-00-496-3033
NSN 5960-00-505-1577
NSN 5905-01-069-5218
NSN 6685-00-832-2946
NSN 5910-00-679-9556
NSN 5910-01-004-2471
NSN 7035-01-514-0599
NSN 6610-01-434-4958
NSN 5960-01-146-8707
NSN 5990-00-465-4903
NSN 5920-01-345-4440