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 5920-00-438-4973
NSN 5855-00-079-2370
NSN 5960-01-412-0619
NSN 5999-01-386-4454
NSN 5855-00-055-1579
NSN 5975-00-781-9812
NSN 6220-01-394-4936
NSN 5920-01-261-6358
NSN 5920-01-646-0543
NSN 6685-00-702-5498
NSN 5975-00-919-0043
NSN 5855-01-594-7809