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 6130-01-634-0603
NSN 5990-01-376-8930
NSN 5975-00-364-6919
NSN 5975-01-027-2157
NSN 6610-00-084-9178
NSN 5996-01-251-2561
NSN 5965-01-068-6696
NSN 5915-00-995-8646
NSN 6620-01-255-7757
NSN 5835-01-291-5405
NSN 5895-00-333-2878
NSN 6105-00-108-1648