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 6645-01-535-7136
NSN 5835-00-023-0780
NSN 5835-00-491-6075
NSN 6320-01-176-8367
NSN 5925-01-332-6524
NSN 5855-00-987-1171
NSN 5950-01-391-5647
NSN 5895-01-360-8915
NSN 5990-00-454-6250
NSN 2925-00-176-3889
NSN 5996-01-400-1640
NSN 5915-00-115-8482