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 6240-00-991-6929
NSN 6135-00-519-1325
NSN 6620-00-905-6590
NSN 6145-00-738-5601
NSN 5915-00-965-9842
NSN 6130-00-186-8460
NSN 6145-00-454-0566
NSN 5895-01-043-8758
NSN 5985-00-701-8286
NSN 5935-00-263-3641
NSN 5999-01-160-6018
NSN 5920-01-598-4033