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 5950-01-151-7810
NSN 5960-01-570-8605
NSN 5835-01-226-0714
NSN 5945-00-334-1228
NSN 5998-00-542-9656
NSN 5945-01-345-9954
NSN 5910-00-800-5054
NSN 6220-01-339-2805
NSN 5998-00-097-3846
NSN 5945-01-247-8932
NSN 5895-01-038-9813
NSN 6145-00-678-0429