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 6135-01-408-9244
NSN 5985-00-738-8066
NSN 5910-01-029-4709
NSN 5999-01-650-5828
NSN 6110-01-575-1038
NSN 2925-00-833-9466
NSN 6150-00-470-7136
NSN 6610-00-487-7606
NSN 6135-01-059-4055
NSN 5920-00-797-9957
NSN 5915-00-539-9930
NSN 5985-00-497-4340