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 5990-00-518-0684
NSN 5985-00-225-5744
NSN 6110-00-042-8365
NSN 6685-01-145-3938
NSN 5920-00-265-6222
NSN 5905-01-578-6998
NSN 6145-01-519-6280
NSN 5950-01-274-2089
NSN 5998-01-167-0413
NSN 5835-01-399-5820
NSN 2925-01-583-5619
NSN 6130-01-634-0603