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 6220-00-450-7689
NSN 6110-01-077-1473
NSN 5835-01-045-6371
NSN 5985-01-418-0804
NSN 6645-00-176-0223
NSN 6645-01-213-1739
NSN 5835-00-302-5296
NSN 5945-00-522-1845
NSN 6105-01-333-8412
NSN 5930-00-675-4901
NSN 5960-01-172-2088
NSN 5935-01-261-0883