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 5855-01-438-4588
NSN 5950-01-406-5992
NSN 5965-01-021-4163
NSN 5950-00-223-1832
NSN 5998-01-164-5291
NSN 5990-00-269-2226
NSN 2925-00-284-1534
NSN 5895-01-352-4566
NSN 5925-00-485-9175
NSN 5960-00-411-1713
NSN 6620-00-646-9474
NSN 5925-01-429-7699