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 6240-01-602-8238
NSN 5985-01-627-1183
NSN 5915-01-033-9269
NSN 6130-01-029-2100
NSN 5985-01-154-7933
NSN 6110-01-173-8808
NSN 6685-01-391-7560
NSN 5935-00-655-1944
NSN 6220-01-072-7575
NSN 5950-00-440-7244
NSN 6685-01-494-3437
NSN 6320-01-643-0850