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 5925-01-517-0090
NSN 5920-01-200-6655
NSN 2925-00-159-9003
NSN 6240-00-156-1602
NSN 7035-01-406-4146
NSN 5930-01-290-5371
NSN 5935-00-818-3826
NSN 6150-01-531-7978
NSN 6610-00-186-9180
NSN 6685-00-905-7616
NSN 5895-01-552-4547
NSN 5998-00-504-8113