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 5930-01-435-6314
NSN 5990-01-529-7307
NSN 5975-01-526-0598
NSN 5905-01-422-1670
NSN 6685-01-616-6133
NSN 6610-01-306-8530
NSN 6685-01-024-7756
NSN 6130-00-119-1528
NSN 5975-00-688-4625
NSN 6620-01-352-5640
NSN 6685-00-740-7256
NSN 6610-00-714-6605