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 5920-00-422-0549
NSN 5945-00-761-8700
NSN 6130-01-026-5385
NSN 6240-01-623-3798
NSN 6620-01-434-6538
NSN 5998-01-116-4784
NSN 6685-00-127-6204
NSN 5920-00-140-8912
NSN 5990-00-293-6031
NSN 6220-01-135-2031
NSN 5985-01-493-5566
NSN 6320-00-557-3079