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 6610-00-714-0549
NSN 7035-01-391-3518
NSN 5935-00-969-3693
NSN 6240-01-554-4548
NSN 6105-01-557-4372
NSN 5945-01-222-3307
NSN 5905-00-402-5093
NSN 6685-00-937-9699
NSN 6130-00-141-8317
NSN 4140-01-072-8326
NSN 6220-01-449-4202
NSN 6150-00-421-5445