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 5935-01-135-4233
NSN 6110-01-342-3806
NSN 2925-01-368-5773
NSN 5930-00-690-9939
NSN 2925-01-084-3347
NSN 6645-00-479-9334
NSN 5990-01-548-2151
NSN 5915-00-346-9144
NSN 5895-01-188-1542
NSN 5996-01-258-6550
NSN 6110-01-442-8080
NSN 6610-01-590-7222