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 5835-01-507-0731
NSN 6610-01-287-9814
NSN 5945-01-129-3394
NSN 5930-00-955-4011
NSN 5925-00-969-9986
NSN 5925-01-421-1139
NSN 6130-00-549-2607
NSN 5835-00-180-7555
NSN 5960-01-609-6565
NSN 6110-01-461-7452
NSN 6145-01-514-7305
NSN 6320-01-170-4068