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 5935-00-498-8941
NSN 5965-01-204-8505
NSN 2925-00-837-3948
NSN 5910-01-176-6651
NSN 5920-01-105-4506
NSN 6150-01-400-2914
NSN 5920-00-246-5992
NSN 6150-01-347-2545
NSN 5985-00-528-1902
NSN 6320-00-646-3311
NSN 5895-01-296-0856
NSN 5925-01-551-1265