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 2925-01-397-2495
NSN 6320-00-261-9136
NSN 5935-01-497-6344
NSN 5975-00-338-2733
NSN 5960-01-333-8428
NSN 5920-01-121-0740
NSN 6220-00-960-7591
NSN 6105-01-033-4720
NSN 6145-01-587-6267
NSN 5945-01-609-9530
NSN 5945-01-374-0192
NSN 5910-01-403-2812