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 5935-01-306-0256
NSN 6145-00-781-6998
NSN 6610-01-426-5090
NSN 6135-01-130-3145
NSN 5975-00-319-5034
NSN 6320-01-103-6218
NSN 5996-01-339-7055
NSN 6135-01-434-1790
NSN 5925-01-253-6216
NSN 6150-01-337-2504
NSN 5950-00-938-8760
NSN 5895-01-133-6510