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 5930-01-364-6200
NSN 6620-00-338-2515
NSN 5985-00-269-3192
NSN 6620-00-030-2894
NSN 5998-01-175-7528
NSN 5996-00-340-5634
NSN 4140-00-988-5427
NSN 6320-00-538-2132
NSN 5935-01-435-4870
NSN 6220-01-071-9428
NSN 6650-01-371-2356
NSN 5996-00-397-4318