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 6320-01-630-7629
NSN 6610-01-437-2506
NSN 5950-01-114-5290
NSN 5915-00-082-7779
NSN 5996-00-222-6049
NSN 5905-01-394-5843
NSN 6145-01-607-6051
NSN 5920-01-446-3325
NSN 5925-00-636-5683
NSN 5895-00-316-0373
NSN 5935-01-651-6635
NSN 6645-01-121-6952