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 6220-01-620-2660
NSN 6620-01-181-1757
NSN 5910-01-157-7801
NSN 5960-01-495-0859
NSN 5960-01-452-1907
NSN 5960-01-243-0007
NSN 5895-01-296-9922
NSN 5965-01-633-1281
NSN 5915-00-228-0114
NSN 5950-01-418-5339
NSN 5855-01-352-7033
NSN 5855-01-054-9014