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 5996-01-610-3406
NSN 2925-00-446-8904
NSN 5960-01-207-6232
NSN 6610-00-935-7131
NSN 5930-01-561-6250
NSN 5965-00-620-7154
NSN 5975-00-961-1416
NSN 6610-01-252-4717
NSN 6220-01-384-3879
NSN 6145-01-173-5143
NSN 6130-00-643-4894
NSN 5996-01-592-8104