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 5930-00-412-3169
NSN 6150-00-734-5281
NSN 5985-01-547-1900
NSN 6130-01-607-5838
NSN 6110-01-171-6019
NSN 6320-01-106-4414
NSN 6220-01-421-0352
NSN 6135-00-932-3136
NSN 5835-01-422-2399
NSN 6645-01-473-9179
NSN 5945-01-407-5275
NSN 5915-00-127-4305