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 6150-00-925-2465
NSN 6320-01-592-6248
NSN 6150-01-135-4115
NSN 5925-01-551-4116
NSN 6645-01-165-3785
NSN 6130-01-640-9953
NSN 5930-01-157-8917
NSN 5990-00-887-0147
NSN 5996-00-318-3405
NSN 7035-01-588-3017
NSN 6130-01-159-2264
NSN 5998-01-227-5009