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 5855-01-050-0861
NSN 6320-01-530-4870
NSN 6220-01-293-7743
NSN 5935-01-224-1238
NSN 2925-01-394-5650
NSN 2925-01-244-3016
NSN 6105-00-242-1221
NSN 6150-01-519-9162
NSN 6150-01-457-5039
NSN 6610-00-967-6698
NSN 5905-01-348-4212
NSN 5975-01-370-5279