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 6685-01-211-5278
NSN 2925-00-115-5857
NSN 6220-00-269-4556
NSN 5990-01-485-0260
NSN 6320-01-064-0372
NSN 5990-01-013-8464
NSN 6130-01-055-3423
NSN 6685-00-239-9301
NSN 5950-01-124-7287
NSN 7035-01-527-0136
NSN 5920-01-058-4961
NSN 6610-01-425-1523