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 6645-00-052-7288
NSN 6620-01-104-2699
NSN 5835-01-391-4556
NSN 6135-00-235-1938
NSN 5935-01-268-1862
NSN 5990-00-636-4218
NSN 6150-01-073-2278
NSN 5965-00-479-9567
NSN 6620-01-578-1984
NSN 6620-00-764-6626
NSN 6685-01-653-6434
NSN 5945-00-088-3785