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 5895-01-511-2081
NSN 5915-01-395-2347
NSN 6145-01-487-5589
NSN 5990-01-602-6701
NSN 5910-00-226-5251
NSN 6610-00-292-9895
NSN 4140-00-968-7367
NSN 5915-00-553-8755
NSN 5895-00-079-9693
NSN 6620-01-351-6870
NSN 6145-01-575-1270
NSN 5855-00-058-1293