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 6220-01-480-6128
NSN 5835-00-092-1136
NSN 6685-00-434-9156
NSN 6150-01-457-2130
NSN 5999-01-023-7997
NSN 5905-00-163-4584
NSN 5950-00-964-4972
NSN 5915-00-721-2204
NSN 5985-01-254-8250
NSN 2925-01-612-0405
NSN 5950-01-108-5475
NSN 6145-01-393-1346