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 6685-00-451-6941
NSN 5975-00-806-2113
NSN 6145-01-417-2988
NSN 5996-00-409-4400
NSN 6105-01-094-9282
NSN 6650-01-183-0711
NSN 6650-00-185-3133
NSN 6320-00-036-3688
NSN 5910-00-960-8659
NSN 5950-01-064-4799
NSN 6130-00-335-9712
NSN 5975-01-318-1356