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 5895-01-621-3264
NSN 5920-00-480-1228
NSN 5925-00-163-2096
NSN 5855-00-237-4088
NSN 6650-00-254-8966
NSN 5935-01-372-0906
NSN 6620-01-301-8884
NSN 4140-01-063-8709
NSN 5945-01-364-9321
NSN 5985-01-338-0603
NSN 6105-00-779-6307
NSN 6610-01-330-4903