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 4140-01-093-6435
NSN 5925-01-359-9585
NSN 5950-00-892-8301
NSN 5960-01-449-1310
NSN 5950-01-023-1493
NSN 7035-00-517-8232
NSN 6135-01-156-4627
NSN 6685-01-339-1585
NSN 5910-01-291-9085
NSN 6150-01-630-5784
NSN 6650-00-227-8743
NSN 6150-01-424-1530