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 5915-01-310-3704
NSN 6135-01-554-8523
NSN 6685-00-141-4300
NSN 5975-00-149-7647
NSN 6220-00-311-4291
NSN 6320-01-145-9013
NSN 6150-01-534-2816
NSN 5930-01-025-1070
NSN 5996-01-257-7385
NSN 5990-01-243-4233
NSN 6685-01-634-0611
NSN 5915-00-730-6761