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 2925-01-125-9169
NSN 6220-01-508-1003
NSN 6105-00-878-4745
NSN 5950-00-905-3520
NSN 5965-01-378-7335
NSN 5999-00-242-3390
NSN 6685-01-493-1809
NSN 6645-00-372-2618
NSN 6610-01-414-7481
NSN 5835-01-486-4191
NSN 5915-01-311-8422
NSN 5945-01-442-2347