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 2925-01-480-8273
NSN 5925-01-508-4145
NSN 6220-01-391-5323
NSN 6620-01-337-0652
NSN 6105-00-172-3694
NSN 2925-01-448-2880
NSN 4140-00-122-6422
NSN 5925-00-866-8550
NSN 5996-00-673-4455
NSN 6145-00-883-7420
NSN 5895-01-540-7392
NSN 5985-01-603-6510