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 6110-01-044-0230
NSN 5999-01-310-9182
NSN 6110-01-449-8696
NSN 6130-01-425-7899
NSN 6240-00-543-9321
NSN 6130-00-141-8317
NSN 5996-01-499-9749
NSN 5915-00-901-9241
NSN 5915-01-044-5260
NSN 2925-01-464-3093
NSN 5975-00-854-0330
NSN 6240-01-584-6774