![File:STS-51-L Recovered Debris (O-Ring Tracks on Right SRB Joint) - GPN-2004-00010.jpg - Wikimedia Commons File:STS-51-L Recovered Debris (O-Ring Tracks on Right SRB Joint) - GPN-2004-00010.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/d/d3/STS-51-L_Recovered_Debris_%28O-Ring_Tracks_on_Right_SRB_Joint%29_-_GPN-2004-00010.jpg/1200px-STS-51-L_Recovered_Debris_%28O-Ring_Tracks_on_Right_SRB_Joint%29_-_GPN-2004-00010.jpg)
File:STS-51-L Recovered Debris (O-Ring Tracks on Right SRB Joint) - GPN-2004-00010.jpg - Wikimedia Commons
Chris Bergin - NSF on Twitter: "At this moment in 1986 Challenger launched on her 10th mission. There was an O-Ring seal failure at SRB ignition (the black puff of smoke), but
![Famous Seal Disasters in History: Space Shuttle Challenger - Advanced EMC Technologies | High Performance Polymer Seals & Bearings Famous Seal Disasters in History: Space Shuttle Challenger - Advanced EMC Technologies | High Performance Polymer Seals & Bearings](http://advanced-emc.com/wp-content/uploads/2019/10/O-Ring-Booster-Rocket-Endeavor.jpg)