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 5999-01-368-1756
NSN 5905-00-462-8230
NSN 7035-00-155-9513
NSN 6320-00-823-2015
NSN 6645-01-195-0561
NSN 5905-01-586-3174
NSN 6650-00-864-2942
NSN 6110-00-226-3148
NSN 2925-01-394-5650
NSN 5925-01-583-8145
NSN 5945-01-088-8071
NSN 5835-01-286-6499