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 2925-01-027-1293
NSN 6220-01-184-9829
NSN 5990-01-544-4360
NSN 6130-00-918-8371
NSN 6145-00-854-6556
NSN 6130-01-221-1673
NSN 5998-01-312-1488
NSN 5960-00-860-7710
NSN 5910-01-559-8188
NSN 2925-01-511-2667
NSN 5915-00-286-3272
NSN 5965-01-646-2840