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 2925-01-354-1752
NSN 6150-01-323-9137
NSN 5990-00-556-9851
NSN 5975-01-004-0955
NSN 5960-01-658-9538
NSN 5950-00-184-2015
NSN 5915-01-014-4837
NSN 6220-01-135-0485
NSN 6130-00-141-0292
NSN 6135-00-097-8162
NSN 6110-00-019-1385
NSN 5930-01-655-6955