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 6610-00-933-5951
NSN 6145-01-418-4938
NSN 5990-00-647-4008
NSN 5895-00-605-8696
NSN 7035-01-089-4485
NSN 5920-00-779-0827
NSN 5990-00-274-3225
NSN 6220-01-616-8173
NSN 6320-01-350-5570
NSN 5910-01-269-6011
NSN 5930-00-269-4996
NSN 6645-01-356-1181