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 6220-00-468-4252
NSN 6135-01-492-8934
NSN 5950-01-528-7982
NSN 5975-01-319-5501
NSN 5935-01-649-7976
NSN 6150-00-297-3928
NSN 7035-01-536-8236
NSN 5990-00-761-9160
NSN 6110-00-125-9227
NSN 7035-01-260-9543
NSN 5895-01-060-8673
NSN 6135-00-840-6451