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 5998-00-825-2691
NSN 6320-00-882-7061
NSN 5835-01-394-7589
NSN 6110-00-520-2681
NSN 7035-00-232-4043
NSN 5915-01-207-0868
NSN 5930-00-591-2274
NSN 6685-00-995-4957
NSN 5910-01-361-9106
NSN 7035-01-245-7973
NSN 5985-01-351-5671
NSN 6685-00-410-4972