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 5975-01-419-9073
NSN 5915-01-023-2555
NSN 6320-01-607-1491
NSN 6220-01-495-2183
NSN 5925-01-388-2763
NSN 5895-01-115-6467
NSN 6130-01-222-0361
NSN 5930-01-411-4980
NSN 6685-00-553-8733
NSN 5975-00-276-7559
NSN 5950-01-646-0136
NSN 5905-01-142-3993