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 6130-00-101-0566
NSN 6150-01-478-9063
NSN 5930-00-782-1983
NSN 5950-00-635-7422
NSN 6620-00-986-9627
NSN 5935-01-606-8836
NSN 6135-01-478-5598
NSN 7035-01-374-0005
NSN 5935-01-432-2739
NSN 5999-00-275-7327
NSN 5998-00-547-8495
NSN 5965-01-368-9994