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 5920-01-490-2733
NSN 6135-01-607-5478
NSN 5895-01-025-8346
NSN 6645-01-532-5785
NSN 5895-00-417-5529
NSN 5985-01-379-1931
NSN 6130-01-264-2636
NSN 5935-01-555-6280
NSN 6320-00-433-2773
NSN 5920-01-351-7936
NSN 6145-01-090-3228
NSN 6145-00-443-5488