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 5855-01-389-3091
NSN 7035-01-391-7470
NSN 5975-01-187-5050
NSN 6150-01-475-8982
NSN 6645-00-010-3054
NSN 6105-00-104-2750
NSN 6320-00-422-9006
NSN 6650-01-434-0331
NSN 6610-01-537-5447
NSN 5925-01-492-0838
NSN 6150-00-792-8938
NSN 5996-00-569-7391