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 6240-01-316-4657
NSN 4140-01-123-9149
NSN 6110-01-302-2615
NSN 5855-00-411-8688
NSN 6610-00-433-5227
NSN 5999-00-982-8054
NSN 5945-00-240-2333
NSN 5905-01-281-7351
NSN 5935-00-938-0411
NSN 6685-01-634-0611
NSN 5835-01-618-7621
NSN 6150-00-230-6919