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 5950-00-153-1959
NSN 5915-01-010-5657
NSN 2925-01-167-6500
NSN 5925-00-511-9693
NSN 5996-01-390-4028
NSN 4140-01-198-5652
NSN 2925-01-211-3294
NSN 5920-01-650-1820
NSN 6620-01-064-0366
NSN 5835-01-622-2556
NSN 5999-01-338-3808
NSN 5998-01-659-0809