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 5965-01-286-4341
NSN 6110-01-653-9427
NSN 5930-00-600-3832
NSN 5998-00-433-1644
NSN 5998-00-420-0224
NSN 5996-00-890-9171
NSN 6105-01-644-2044
NSN 5975-00-518-4977
NSN 5960-01-342-1961
NSN 5935-00-463-5119
NSN 4140-00-320-8614
NSN 6685-00-284-2244