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 5999-01-111-6948
NSN 5915-01-440-8250
NSN 5930-00-088-7530
NSN 5920-00-735-0783
NSN 6610-00-186-9180
NSN 5950-01-447-1814
NSN 6320-00-004-9158
NSN 6150-00-292-8778
NSN 5965-01-292-8307
NSN 6150-00-868-7953
NSN 5985-01-415-5785
NSN 7035-00-312-3055