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 6685-01-282-9411
NSN 2925-01-085-0691
NSN 5975-00-935-5946
NSN 5975-01-078-7597
NSN 6105-01-634-0322
NSN 5998-01-356-0200
NSN 5999-00-137-5329
NSN 5935-01-297-5920
NSN 5990-01-232-6018
NSN 5835-01-014-4574
NSN 5960-01-380-0885
NSN 5935-01-307-6932