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 6135-00-321-6707
NSN 6145-01-056-5515
NSN 6220-01-482-0365
NSN 5965-01-643-9783
NSN 6320-01-503-7180
NSN 6645-01-420-0229
NSN 5975-00-086-8300
NSN 4140-00-905-6570
NSN 5996-01-011-3803
NSN 5930-01-577-8780
NSN 6645-01-619-2756
NSN 5960-01-438-9836