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 6610-00-720-8775
NSN 5985-00-371-8020
NSN 6610-01-469-6235
NSN 6130-01-200-3005
NSN 5950-01-053-8434
NSN 5855-01-096-9294
NSN 5975-01-242-3615
NSN 5925-00-137-0606
NSN 6685-01-548-3875
NSN 5998-01-240-3120
NSN 5935-00-723-0349
NSN 6610-01-511-5260