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 6685-01-634-0611
NSN 5915-01-110-6387
NSN 5950-00-314-8268
NSN 5998-01-159-4326
NSN 6150-01-584-8970
NSN 5930-01-261-9129
NSN 5920-00-715-2541
NSN 5895-01-441-5343
NSN 5915-01-278-9176
NSN 6150-01-435-0405
NSN 5925-01-432-8431
NSN 5975-00-818-9140