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 5915-01-478-9254
NSN 5999-01-448-4898
NSN 6240-00-643-0920
NSN 6220-00-324-7474
NSN 6130-01-090-0247
NSN 5905-01-155-1379
NSN 5935-00-682-4326
NSN 5930-01-360-5912
NSN 6130-01-331-2010
NSN 5998-00-661-0380
NSN 2925-01-172-9209
NSN 5920-01-268-5026