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 5999-01-408-1912
NSN 6150-01-511-3695
NSN 2925-01-633-0225
NSN 6130-01-352-6112
NSN 5915-00-107-6828
NSN 5950-01-239-6498
NSN 6150-00-928-4961
NSN 6145-00-011-2390
NSN 4140-00-480-2592
NSN 5965-00-932-4591
NSN 7035-01-271-1643
NSN 5920-00-355-4736