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 6150-01-511-5055
NSN 6685-00-450-7947
NSN 5920-01-503-3653
NSN 6130-00-754-2950
NSN 2925-01-076-5219
NSN 6105-00-288-5872
NSN 5985-00-316-2610
NSN 5915-00-811-1128
NSN 4140-01-441-9170
NSN 6645-01-366-4344
NSN 5905-00-581-5049
NSN 5999-01-420-9763