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 5915-01-317-4080
NSN 6105-01-022-8693
NSN 5835-01-550-1577
NSN 4140-01-460-7998
NSN 6220-00-244-5040
NSN 5975-01-243-0221
NSN 6150-00-408-3401
NSN 2925-00-836-9543
NSN 6130-01-607-5296
NSN 5990-01-361-4192
NSN 6240-00-806-4554
NSN 5999-01-304-5155