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 5960-00-026-3142
NSN 6685-01-541-1021
NSN 6240-01-338-0081
NSN 4140-01-415-6013
NSN 5985-01-147-6101
NSN 5855-00-631-4565
NSN 5985-00-170-8536
NSN 6610-01-179-8352
NSN 5905-01-560-6918
NSN 6620-01-075-5299
NSN 6105-01-393-7026
NSN 6145-01-447-3678