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 6320-01-600-0787
NSN 5975-01-023-1592
NSN 5965-01-269-0684
NSN 6135-00-120-1034
NSN 6645-01-511-3272
NSN 5920-01-061-4608
NSN 5960-01-476-5686
NSN 5930-00-915-3464
NSN 7035-01-155-0153
NSN 6110-00-728-0680
NSN 6685-01-252-9470
NSN 5975-01-394-5954