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 6320-00-225-7013
NSN 5990-00-110-1153
NSN 6610-01-518-7367
NSN 6240-00-372-4841
NSN 5975-01-333-4108
NSN 6610-01-070-0230
NSN 5950-00-373-3244
NSN 5915-01-373-1708
NSN 5990-01-288-7393
NSN 4140-01-310-5045
NSN 6130-01-438-2088
NSN 5905-01-467-1772