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 5960-01-328-1533
NSN 5835-00-269-2232
NSN 5835-01-424-0054
NSN 5925-01-421-4276
NSN 5996-00-739-2315
NSN 5985-00-927-7670
NSN 5975-01-577-7327
NSN 5855-01-513-9601
NSN 6240-00-189-2762
NSN 6105-01-588-5587
NSN 6130-01-350-2822
NSN 5950-01-337-9748