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 6130-01-464-3998
NSN 5920-01-100-8939
NSN 2925-01-329-3665
NSN 6620-01-394-4042
NSN 5996-01-065-0939
NSN 5998-01-384-3938
NSN 6220-01-613-5231
NSN 5998-01-268-1753
NSN 6220-01-215-2179
NSN 5930-01-187-0447
NSN 6610-00-225-9886
NSN 5920-01-583-1331