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 7035-01-623-9555
NSN 5960-01-410-8177
NSN 5925-01-575-7586
NSN 6150-00-034-7844
NSN 5935-01-088-8079
NSN 2925-00-247-6248
NSN 5998-00-948-0343
NSN 6150-01-395-9292
NSN 5960-00-201-5265
NSN 6320-01-347-2638
NSN 5930-01-389-0027
NSN 6145-00-903-4619