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 5975-01-201-8290
NSN 6145-01-318-6154
NSN 5975-01-038-4630
NSN 5905-00-160-5945
NSN 5930-00-900-7327
NSN 5935-00-689-4707
NSN 5910-00-853-4975
NSN 4140-01-468-1798
NSN 6220-01-272-0850
NSN 5915-01-319-9062
NSN 6685-00-539-8060
NSN 6320-00-931-4855