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 2925-01-573-1067
NSN 6610-00-837-3012
NSN 4140-00-196-7139
NSN 5960-01-359-6630
NSN 6145-01-449-0342
NSN 5930-01-270-6998
NSN 5996-01-373-3436
NSN 5965-01-133-1745
NSN 5905-00-821-5739
NSN 6220-00-186-0177
NSN 6130-01-355-6557
NSN 5999-01-443-3392