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 5855-01-033-1375
NSN 6685-01-408-7299
NSN 5998-00-141-9872
NSN 6645-01-148-4703
NSN 6685-01-510-2816
NSN 5930-01-034-9317
NSN 5920-01-604-9045
NSN 6220-01-391-1851
NSN 5895-00-690-4507
NSN 5960-01-004-5483
NSN 5935-01-442-8356
NSN 5999-01-389-4138