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 6620-00-770-0989
NSN 6685-01-062-5591
NSN 5975-00-107-1853
NSN 6610-00-339-1254
NSN 5855-01-260-7445
NSN 5990-00-308-0479
NSN 6685-00-216-6676
NSN 5945-00-139-1037
NSN 5915-01-579-3650
NSN 5895-01-442-3199
NSN 6130-00-850-9886
NSN 6105-01-597-1078