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 6110-00-051-7949
NSN 6150-01-076-1510
NSN 2925-01-583-5619
NSN 5998-01-482-8891
NSN 5915-00-283-8670
NSN 5915-01-273-7966
NSN 5905-00-654-7022
NSN 6620-01-325-6295
NSN 5835-00-222-3956
NSN 5999-01-604-4498
NSN 4140-01-376-5877
NSN 5960-01-426-4242