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 6650-01-073-4793
NSN 5975-01-491-0494
NSN 6620-00-993-3594
NSN 5960-01-294-2397
NSN 5895-01-480-4910
NSN 6220-01-421-4448
NSN 5910-01-483-0621
NSN 5960-00-622-5636
NSN 6150-00-924-0456
NSN 6685-00-932-4258
NSN 5985-00-764-4526
NSN 5945-01-552-6438