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 5998-01-132-0479
NSN 6145-01-371-2916
NSN 5965-01-514-9109
NSN 6105-01-326-8985
NSN 6110-01-433-8055
NSN 6130-01-291-3187
NSN 7035-01-514-8522
NSN 5855-01-632-1509
NSN 5985-01-337-2476
NSN 6620-00-932-6508
NSN 5985-00-673-5832
NSN 5905-00-445-6571