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 6240-01-633-9357
NSN 6150-01-506-4353
NSN 6110-01-465-2800
NSN 4140-00-660-8699
NSN 6685-00-270-8070
NSN 5895-01-413-8682
NSN 5930-01-642-1805
NSN 6220-00-445-9284
NSN 4140-01-647-5984
NSN 5945-00-837-4363
NSN 6130-01-217-5880
NSN 6130-01-317-2328