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 5930-01-560-5338
NSN 5960-00-387-6377
NSN 6110-01-224-7910
NSN 5990-01-641-5782
NSN 5915-00-922-1629
NSN 4140-01-417-3022
NSN 5925-00-687-1625
NSN 6610-00-803-0483
NSN 5920-01-369-7665
NSN 5945-00-436-1164
NSN 7035-00-020-2227
NSN 5905-01-403-2806