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 6650-01-414-9784
NSN 6135-01-305-6958
NSN 6610-01-013-8922
NSN 5996-01-160-5588
NSN 5950-01-510-8420
NSN 6620-00-631-4599
NSN 4140-00-269-5795
NSN 6145-00-397-4231
NSN 5950-01-100-1193
NSN 5925-01-544-0001
NSN 6220-00-334-7008
NSN 5950-01-180-0109