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 6220-01-198-5630
NSN 5999-00-935-3361
NSN 6150-00-302-4714
NSN 6610-01-495-0596
NSN 5935-00-186-9370
NSN 6110-00-929-6125
NSN 6685-00-802-4230
NSN 4140-01-087-3336
NSN 5996-00-256-1718
NSN 6620-01-076-8706
NSN 6105-01-299-4802
NSN 6620-01-315-1159