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 5950-01-158-7851
NSN 6130-00-882-3619
NSN 6240-00-266-6258
NSN 5999-01-338-9654
NSN 6220-00-421-9109
NSN 5990-00-181-2220
NSN 6240-01-062-0878
NSN 5895-00-715-0896
NSN 5835-01-228-4474
NSN 5920-01-494-9401
NSN 5835-00-466-8544
NSN 5930-01-207-1012