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 5950-01-579-4055
NSN 5950-01-181-4799
NSN 6145-01-634-0388
NSN 6130-01-088-4797
NSN 5975-00-104-5399
NSN 6220-00-176-0273
NSN 5996-00-644-4662
NSN 5975-01-507-1312
NSN 5998-01-480-4450
NSN 5965-01-606-2505
NSN 6320-00-456-2092
NSN 5895-00-957-4532