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 5905-01-088-7951
NSN 6150-01-609-5759
NSN 5985-00-548-4298
NSN 5945-01-418-0419
NSN 6685-01-307-0297
NSN 5945-00-463-2071
NSN 6105-01-110-1045
NSN 5915-01-310-4774
NSN 6105-01-276-5362
NSN 6685-01-642-5690
NSN 6110-00-507-4881
NSN 5910-00-143-4984