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 6145-00-295-1503
NSN 5998-00-208-3362
NSN 5895-00-132-4207
NSN 5855-01-383-6860
NSN 5998-01-215-1313
NSN 5925-00-533-1547
NSN 5895-01-141-1805
NSN 5935-01-247-4037
NSN 6150-00-628-1550
NSN 5985-01-363-5756
NSN 5910-00-809-7250
NSN 6145-01-303-1000