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 5950-00-140-5004
NSN 5915-01-174-8995
NSN 5999-00-027-9476
NSN 5855-01-598-7392
NSN 5925-01-613-2453
NSN 5910-01-358-1236
NSN 6220-01-313-6390
NSN 5998-01-657-8481
NSN 5990-00-602-9750
NSN 5915-00-324-2985
NSN 5895-01-447-2748
NSN 6105-01-340-8045