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 6150-00-561-0403
NSN 6220-00-679-5629
NSN 6130-01-288-3333
NSN 5935-01-629-1043
NSN 6240-00-232-7065
NSN 6685-01-442-0893
NSN 5975-01-634-0678
NSN 5910-01-604-4094
NSN 5999-00-045-6311
NSN 7035-01-391-7470
NSN 5905-01-371-2538
NSN 6220-00-541-8515