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 5935-00-245-6726
NSN 5930-00-152-5123
NSN 6320-01-425-1417
NSN 6645-00-456-0080
NSN 6130-00-257-5599
NSN 5925-00-056-8931
NSN 5910-01-123-8188
NSN 5905-01-521-3496
NSN 7035-01-255-2332
NSN 6685-01-271-9767
NSN 6105-00-135-7336
NSN 6240-01-533-1453