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 6110-00-355-7426
NSN 6620-00-185-1671
NSN 6150-01-197-7716
NSN 5960-01-360-3639
NSN 5998-01-423-1555
NSN 5895-00-824-6811
NSN 5990-00-929-3216
NSN 6685-01-497-5207
NSN 5905-01-324-7115
NSN 6645-01-473-3752
NSN 6110-01-506-8722
NSN 5975-01-213-0801