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 6685-01-377-6433
NSN 5905-01-215-1143
NSN 6645-00-371-1861
NSN 5975-01-538-0134
NSN 6320-00-539-9283
NSN 6685-01-617-2334
NSN 5999-01-005-1387
NSN 5920-00-806-5613
NSN 6650-00-958-7408
NSN 5915-01-589-9702
NSN 6135-01-598-9889
NSN 5935-00-228-2754