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 7035-00-870-0290
NSN 5998-00-296-2520
NSN 5910-01-556-9689
NSN 5960-01-016-4126
NSN 4140-01-150-0740
NSN 5960-00-273-3260
NSN 6145-00-828-8371
NSN 6150-01-477-8853
NSN 5925-00-407-6520
NSN 5975-01-592-7139
NSN 7035-01-073-5233
NSN 6150-01-294-9222