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 5910-00-542-2992
NSN 5925-01-032-3461
NSN 5990-00-277-3763
NSN 5935-01-290-2616
NSN 5975-00-900-9730
NSN 7035-01-339-3665
NSN 6220-01-073-3338
NSN 6320-00-857-4073
NSN 5835-00-912-5656
NSN 6145-01-401-3713
NSN 6105-00-484-9270
NSN 5930-00-054-3240