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 6105-00-944-6119
NSN 6220-01-374-0792
NSN 6220-00-076-0428
NSN 6145-01-096-8130
NSN 6105-00-455-8879
NSN 4140-01-423-1005
NSN 5895-01-503-0661
NSN 6240-01-585-2223
NSN 6685-00-516-2173
NSN 6135-01-426-0671
NSN 5930-01-385-6670
NSN 7035-00-225-6499