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 5996-00-316-5115
NSN 6145-00-286-9588
NSN 6685-00-539-8060
NSN 6150-01-386-9205
NSN 5910-01-149-9853
NSN 5965-00-918-3950
NSN 5998-00-560-2302
NSN 5930-00-240-8269
NSN 5925-01-572-1015
NSN 6610-00-194-0068
NSN 6145-01-577-6474
NSN 5935-01-293-7615