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 6135-01-437-7741
NSN 6240-00-870-0423
NSN 6110-01-425-1449
NSN 2925-00-982-0409
NSN 5835-01-473-1620
NSN 5935-01-131-2982
NSN 5945-01-608-3949
NSN 5960-00-681-9802
NSN 6110-01-158-6138
NSN 5960-01-337-5339
NSN 6645-00-664-4665
NSN 5960-01-021-3277