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 6110-01-653-1405
NSN 6610-00-400-1252
NSN 5999-01-381-5510
NSN 6135-00-900-2139
NSN 2925-01-222-7764
NSN 5950-01-640-8873
NSN 6320-00-908-6841
NSN 6240-01-409-2465
NSN 5996-00-578-9092
NSN 5935-00-394-1519
NSN 6150-00-264-5978
NSN 4140-00-203-6586