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 5930-00-438-0595
NSN 5998-00-111-2197
NSN 5930-01-432-5074
NSN 5925-01-500-1352
NSN 6610-01-398-8092
NSN 5950-01-252-3985
NSN 5998-01-422-2831
NSN 5835-00-148-9719
NSN 6240-01-334-4356
NSN 2925-01-387-0870
NSN 7035-00-997-6212
NSN 6610-00-104-6800