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 5855-01-486-9924
NSN 5910-01-010-8357
NSN 5965-01-346-4547
NSN 6135-01-411-3212
NSN 4140-01-337-5556
NSN 6240-00-702-1814
NSN 5996-01-203-5701
NSN 5835-01-388-5198
NSN 6145-01-414-5011
NSN 7035-00-902-8995
NSN 5990-01-347-1478
NSN 7035-00-104-7613