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 6240-00-591-6836
NSN 5998-00-472-9268
NSN 6150-00-673-0429
NSN 6240-01-384-8802
NSN 5910-00-983-7124
NSN 6685-01-601-6280
NSN 5930-01-197-6857
NSN 6135-00-461-3590
NSN 5999-00-337-0849
NSN 5960-00-348-3015
NSN 5945-00-821-8442
NSN 6620-01-378-5579