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 4140-01-552-6158
NSN 6320-00-539-9283
NSN 5835-01-553-6772
NSN 5910-00-271-7588
NSN 5910-00-968-8021
NSN 5990-00-686-5868
NSN 4140-00-552-7370
NSN 5855-00-879-7245
NSN 5835-00-813-1724
NSN 6150-00-516-7844
NSN 5895-01-243-2080
NSN 5915-01-005-0164