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 5975-00-286-8506
NSN 6135-00-347-0595
NSN 5835-00-946-2656
NSN 5935-00-302-3577
NSN 5960-01-476-5686
NSN 5905-01-659-3900
NSN 5935-01-512-5132
NSN 5996-01-604-8629
NSN 5990-01-630-0456
NSN 6620-01-499-1492
NSN 5998-01-440-2966
NSN 6610-00-361-6954