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 5945-01-560-9360
NSN 6135-00-097-8162
NSN 6620-00-248-6950
NSN 6320-01-476-7702
NSN 5935-01-240-5738
NSN 5960-01-126-6245
NSN 4140-01-315-3959
NSN 5925-01-255-2445
NSN 5975-01-392-0436
NSN 6145-01-584-2334
NSN 5930-00-678-9675
NSN 5910-01-206-4641