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 5996-00-263-0593
NSN 6150-01-485-6129
NSN 5999-00-225-2833
NSN 2925-01-101-4655
NSN 5895-01-453-7978
NSN 5985-00-281-0810
NSN 6105-01-361-7461
NSN 5835-01-332-2867
NSN 5990-00-107-7161
NSN 6135-01-296-1860
NSN 6610-01-269-5437
NSN 5835-01-647-6426