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 6105-00-275-0826
NSN 5990-00-277-3763
NSN 6240-00-627-9007
NSN 2925-01-548-6674
NSN 5965-01-555-8775
NSN 5990-00-518-0684
NSN 6645-00-258-8547
NSN 5996-00-052-5490
NSN 6620-00-589-0071
NSN 6105-01-634-0322
NSN 5985-00-869-1041
NSN 6320-01-329-2297