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 5975-01-025-1613
NSN 5920-01-279-0419
NSN 5950-01-420-3421
NSN 6320-01-352-8084
NSN 6145-01-657-8785
NSN 5915-00-443-5854
NSN 7035-01-411-6062
NSN 5855-01-417-3250
NSN 5910-01-057-3087
NSN 5895-01-137-0753
NSN 5855-01-658-1044
NSN 5920-01-445-9617