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 6150-00-100-1302
NSN 5999-01-153-1280
NSN 5930-01-323-7161
NSN 5975-01-452-2622
NSN 6610-00-943-3136
NSN 5990-01-313-5543
NSN 6150-01-459-8412
NSN 6685-01-021-2180
NSN 6320-00-831-2227
NSN 6610-01-023-6073
NSN 5998-01-410-7788
NSN 5999-00-824-7719