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 6145-01-174-2992
NSN 5905-00-511-5095
NSN 6220-01-370-6148
NSN 2925-01-094-4771
NSN 6240-00-370-5862
NSN 6645-01-299-4966
NSN 6220-00-734-0276
NSN 5975-01-368-4718
NSN 5905-00-593-8658
NSN 5910-00-814-0761
NSN 5975-01-473-2493
NSN 2925-01-348-8306