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 5930-01-502-9135
NSN 6135-01-056-4609
NSN 5965-01-074-3083
NSN 5835-00-402-8387
NSN 6220-01-420-0901
NSN 7035-01-485-9723
NSN 5975-01-283-8831
NSN 6650-01-320-1169
NSN 5965-00-458-7321
NSN 6105-00-489-0817
NSN 6220-01-080-4090
NSN 6220-00-992-5889