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 6130-01-476-2702
NSN 5975-01-278-9821
NSN 6320-01-225-9963
NSN 5925-01-474-3579
NSN 5835-01-485-0210
NSN 7035-01-357-4928
NSN 2925-00-284-1534
NSN 5905-00-925-1592
NSN 5975-00-233-6301
NSN 5895-01-190-2324
NSN 2925-01-587-3956
NSN 6105-00-038-7518