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 5935-00-181-4464
NSN 4140-01-337-4625
NSN 6135-01-435-8451
NSN 6220-00-856-3583
NSN 6220-01-170-2611
NSN 5935-01-044-0932
NSN 5920-01-144-7878
NSN 5895-00-086-9036
NSN 5935-01-468-0129
NSN 6610-01-226-2347
NSN 5835-01-412-6901
NSN 6135-01-460-8830