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 6150-01-054-4924
NSN 5895-01-015-3810
NSN 4140-01-348-5859
NSN 5935-01-415-0887
NSN 4140-01-333-2504
NSN 5915-00-617-9477
NSN 5998-01-090-1490
NSN 5945-00-752-5268
NSN 2925-00-163-9016
NSN 5930-01-382-6331
NSN 5895-01-610-0054
NSN 6685-00-208-0113