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 6645-00-442-0475
NSN 5925-01-446-1967
NSN 5905-01-584-1185
NSN 6645-01-113-6712
NSN 5998-01-050-9955
NSN 6320-01-631-7828
NSN 6645-00-032-1125
NSN 6320-00-831-2227
NSN 5990-00-835-1582
NSN 4140-01-284-6485
NSN 5950-00-160-5570
NSN 6220-01-142-3148