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 5996-00-082-3871
NSN 6620-00-905-8530
NSN 7035-00-055-9778
NSN 5996-01-433-7082
NSN 6220-00-263-4893
NSN 6320-01-379-1182
NSN 6135-01-450-1269
NSN 5950-01-216-2260
NSN 5895-01-098-0209
NSN 6135-01-247-5660
NSN 6145-00-970-8046
NSN 5920-00-171-2347