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 5915-01-646-4034
NSN 5905-01-169-5303
NSN 6620-00-967-9684
NSN 5998-00-761-4023
NSN 6150-00-877-0014
NSN 6610-01-448-4989
NSN 2925-01-134-9175
NSN 7035-00-215-3272
NSN 5950-00-548-6998
NSN 5950-01-502-8219
NSN 5996-00-959-6511
NSN 5895-01-041-8912