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 5910-01-105-6267
NSN 5985-00-316-6176
NSN 6110-01-068-3982
NSN 5895-01-573-9825
NSN 5945-00-767-5895
NSN 5996-01-032-4815
NSN 5996-00-270-0340
NSN 5925-01-396-4542
NSN 6130-01-523-7586
NSN 6145-01-540-7751
NSN 5895-01-231-2061
NSN 6240-00-655-2523