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 5835-00-106-2120
NSN 6685-00-738-5604
NSN 5930-00-148-1128
NSN 5975-01-342-4681
NSN 6240-01-434-6776
NSN 6220-01-247-0086
NSN 6320-01-302-5157
NSN 5990-00-538-5261
NSN 6620-01-022-2158
NSN 6145-00-209-5657
NSN 5975-01-134-0257
NSN 6620-01-391-6499