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 5975-01-495-6171
NSN 6105-01-512-0044
NSN 6650-01-302-6549
NSN 2925-01-139-5144
NSN 6685-01-463-1845
NSN 5935-01-415-1775
NSN 6620-01-270-0710
NSN 5835-01-478-9428
NSN 5895-01-287-8306
NSN 6145-00-507-3314
NSN 5990-01-071-8510
NSN 5915-00-854-9025