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 5990-01-524-8954
NSN 6320-01-103-1655
NSN 5905-01-487-4374
NSN 5905-01-596-9768
NSN 6610-01-209-5798
NSN 6645-00-011-9968
NSN 6645-01-468-3397
NSN 6220-00-898-7311
NSN 6130-01-143-5157
NSN 5925-00-617-9927
NSN 6130-00-455-9911
NSN 6650-01-075-1514