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 5905-01-564-1141
NSN 5965-01-383-2614
NSN 5998-01-567-9900
NSN 5950-01-624-2700
NSN 5998-01-129-9235
NSN 6685-00-679-9965
NSN 6240-01-250-3574
NSN 6135-00-078-9931
NSN 6685-01-103-9937
NSN 5996-01-211-3562
NSN 5895-00-448-1689
NSN 6320-01-118-0553