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 5935-00-553-3095
NSN 6320-01-253-9585
NSN 5855-01-224-7975
NSN 5915-00-518-1644
NSN 6220-00-821-9387
NSN 5960-00-987-1897
NSN 5930-01-356-5770
NSN 5905-00-767-1720
NSN 4140-01-373-1788
NSN 5930-01-653-2767
NSN 5998-01-440-9732
NSN 5998-00-367-4281