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 5985-01-356-1771
NSN 6145-01-083-2429
NSN 6320-00-322-3460
NSN 5998-01-254-3734
NSN 6685-00-269-0438
NSN 5920-00-051-2629
NSN 6240-01-417-2976
NSN 5925-00-248-5734
NSN 5935-00-055-1048
NSN 6620-01-213-8772
NSN 5905-00-815-0203
NSN 6130-00-269-4077