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 5905-01-408-8342
NSN 6150-01-445-4003
NSN 5945-01-097-6641
NSN 5895-01-655-3227
NSN 5950-01-426-5284
NSN 6130-00-875-0835
NSN 6320-01-233-5798
NSN 5855-01-364-9810
NSN 6240-01-188-1413
NSN 6620-01-238-8018
NSN 5855-00-189-6066
NSN 6145-01-433-2329