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 5945-01-627-0495
NSN 5975-01-447-3270
NSN 5925-00-035-8469
NSN 5905-00-560-8186
NSN 5998-01-435-5835
NSN 5950-00-584-4571
NSN 7035-00-238-3662
NSN 6320-01-347-2638
NSN 5835-01-315-9948
NSN 5835-01-442-6482
NSN 6650-01-092-8435
NSN 6220-01-558-8594