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 4140-00-116-0196
NSN 5935-00-184-8540
NSN 5895-00-643-3980
NSN 2925-01-430-4206
NSN 5975-01-425-4057
NSN 5990-01-349-8132
NSN 6610-01-647-7412
NSN 6110-00-089-2948
NSN 5925-00-990-8818
NSN 2925-01-217-5889
NSN 5965-01-111-6031
NSN 5935-01-309-6374