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 2925-01-620-9673
NSN 6645-00-464-6375
NSN 6240-00-080-2012
NSN 5915-01-461-0037
NSN 6620-00-557-7008
NSN 5998-01-483-1804
NSN 5985-01-050-6435
NSN 5905-01-607-6163
NSN 6610-01-033-2402
NSN 7035-01-541-9818
NSN 6150-00-519-2970
NSN 5925-01-553-6406