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 4140-01-314-4697
NSN 5975-01-150-5340
NSN 5930-01-212-3373
NSN 5985-00-156-6651
NSN 6150-01-359-3690
NSN 5950-01-009-4532
NSN 5975-01-224-8672
NSN 5910-01-275-4910
NSN 6135-01-466-0192
NSN 5895-01-599-6304
NSN 6130-00-758-7435
NSN 5998-01-265-0796