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 5996-00-608-9059
NSN 5985-01-532-3693
NSN 5905-01-651-0922
NSN 5855-01-398-4313
NSN 6130-00-483-6896
NSN 6610-00-069-0674
NSN 6150-01-413-3347
NSN 6105-01-367-2269
NSN 5915-00-353-0853
NSN 6645-01-450-0809
NSN 7035-01-412-8322
NSN 5945-00-963-5805