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 7035-01-384-4383
NSN 5998-01-313-1646
NSN 5960-01-350-4288
NSN 5905-01-010-2894
NSN 5835-01-532-9373
NSN 6130-01-555-6623
NSN 6150-01-196-0179
NSN 6645-01-243-3138
NSN 5935-00-191-1978
NSN 5960-01-265-0354
NSN 6610-00-854-0975
NSN 5935-01-442-7094