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 6220-00-737-0869
NSN 6320-01-476-7702
NSN 5835-01-442-6482
NSN 5925-00-594-0840
NSN 5985-00-189-0953
NSN 5996-01-573-4779
NSN 5999-01-280-0956
NSN 5920-01-012-9926
NSN 6145-00-178-8830
NSN 5895-01-075-5530
NSN 6130-01-400-6123
NSN 6220-01-653-5335