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 5935-01-367-5054
NSN 5835-01-370-4292
NSN 5925-01-602-9311
NSN 5925-00-336-9150
NSN 5998-00-975-1099
NSN 5960-00-483-6074
NSN 6220-01-483-2342
NSN 5910-00-172-3385
NSN 6620-01-354-8472
NSN 6320-01-458-9567
NSN 5990-01-346-5422
NSN 6620-01-367-2597