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 4140-01-286-7454
NSN 5905-01-411-3945
NSN 5998-01-275-3494
NSN 6240-01-517-7566
NSN 5996-01-100-3731
NSN 5915-00-233-7592
NSN 6220-00-754-3452
NSN 6320-01-302-5157
NSN 2925-01-531-6811
NSN 5996-01-495-0763
NSN 6240-01-532-2283
NSN 6105-01-452-1020