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 6135-01-026-9960
NSN 6240-00-570-9884
NSN 5835-00-977-1254
NSN 5855-01-068-3683
NSN 6610-01-420-3780
NSN 6110-01-103-4046
NSN 5985-01-057-9589
NSN 6240-01-399-3009
NSN 5925-01-428-9978
NSN 6620-00-081-7899
NSN 5950-00-729-7818
NSN 6150-00-185-3293