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 5996-00-618-5920
NSN 6240-01-529-6624
NSN 6320-01-101-5816
NSN 6685-01-278-9836
NSN 5975-01-037-5837
NSN 6220-00-808-3655
NSN 5925-01-632-9612
NSN 5945-01-502-0607
NSN 5930-01-447-7516
NSN 5915-00-443-5854
NSN 6645-01-158-8136
NSN 5910-01-505-8690