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 5910-01-253-4148
NSN 5895-00-152-0104
NSN 5985-00-444-5289
NSN 7035-00-104-7613
NSN 5935-01-487-2846
NSN 5925-01-641-2879
NSN 5935-01-475-0970
NSN 6145-01-279-1264
NSN 6145-01-332-4553
NSN 5835-00-665-3395
NSN 6130-01-169-9255
NSN 5910-01-252-0536