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 5965-01-549-8330
NSN 5835-01-200-7153
NSN 5998-00-908-4498
NSN 6110-01-558-5200
NSN 6145-01-188-2789
NSN 6320-01-486-8004
NSN 5915-01-528-1169
NSN 6145-01-560-8228
NSN 5835-00-215-3769
NSN 5965-00-532-3284
NSN 6150-01-487-3830
NSN 6240-01-200-7937