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 5920-00-140-8912
NSN 5990-01-364-8405
NSN 5895-00-179-1529
NSN 6650-00-254-8966
NSN 6685-01-611-7849
NSN 4140-01-227-1342
NSN 6220-00-118-6112
NSN 6145-01-487-6936
NSN 5925-00-111-1969
NSN 6130-01-518-0474
NSN 5960-00-165-3038
NSN 5996-00-577-0483