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 5945-00-107-1675
NSN 5835-01-258-5353
NSN 5910-01-444-1429
NSN 6220-00-925-4645
NSN 4140-00-895-3417
NSN 5925-01-307-2008
NSN 5835-00-021-2521
NSN 5960-01-207-4452
NSN 6240-00-813-0100
NSN 5975-01-106-3595
NSN 5975-01-487-6417
NSN 6610-01-541-4464