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 2925-01-343-5887
NSN 5910-01-396-0853
NSN 5975-01-019-1553
NSN 6220-01-190-6906
NSN 5998-00-242-7271
NSN 6240-00-006-3725
NSN 5915-01-590-1575
NSN 6110-01-597-5772
NSN 6240-01-313-2229
NSN 6105-01-119-5468
NSN 5996-01-053-3807
NSN 2925-01-338-5157