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 5915-01-655-1413
NSN 5975-01-224-7209
NSN 5910-01-014-5944
NSN 6320-01-227-2648
NSN 6610-01-446-7635
NSN 5855-01-452-0955
NSN 5998-01-271-4687
NSN 6150-01-367-3093
NSN 5920-01-095-4519
NSN 5925-00-384-8023
NSN 6130-01-327-0227
NSN 6150-01-017-6117