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 5895-01-254-7804
NSN 5905-01-465-8563
NSN 5996-00-467-1429
NSN 5998-00-289-9092
NSN 5960-00-234-5961
NSN 6610-00-276-8919
NSN 6130-00-799-9383
NSN 5835-01-632-6627
NSN 5895-01-578-6623
NSN 5930-00-238-0800
NSN 5975-00-618-0161
NSN 5895-01-446-4242