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 5996-00-288-1829
NSN 5895-01-436-9347
NSN 5999-01-392-1989
NSN 5960-01-019-8760
NSN 5985-00-222-9934
NSN 5925-01-166-7562
NSN 6135-01-056-4609
NSN 5910-00-421-1007
NSN 6130-00-202-4688
NSN 6130-01-630-3959
NSN 5945-01-156-8717
NSN 6320-00-937-5625