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 5999-00-034-1080
NSN 5998-00-456-1852
NSN 6105-01-575-4869
NSN 5925-00-812-4522
NSN 5999-00-063-5786
NSN 6610-01-056-1335
NSN 5925-01-484-6613
NSN 5905-01-018-3014
NSN 6240-01-382-3756
NSN 5945-01-381-1356
NSN 5915-00-364-3650
NSN 5855-01-515-9547