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 2925-01-244-3016
NSN 5950-01-373-5297
NSN 6645-01-142-4574
NSN 5945-00-920-4297
NSN 7035-00-631-3782
NSN 6320-00-539-9283
NSN 6130-00-920-3239
NSN 5895-01-012-2202
NSN 6110-01-327-4572
NSN 5935-00-225-6838
NSN 6150-01-604-6275
NSN 2925-01-372-9455