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 5950-01-365-0392
NSN 5915-01-066-3571
NSN 5998-00-123-8148
NSN 6620-00-411-4983
NSN 4140-01-382-2754
NSN 5930-01-285-9491
NSN 5945-01-027-0724
NSN 5985-01-228-0202
NSN 6220-01-647-1773
NSN 6145-00-966-8961
NSN 5930-01-497-9608
NSN 5895-01-273-6590