Time to revive an old thread

I just ordered o-rings from Grainger. We have a store here in town, so there is no shipping charges to have them shipped to the store with the next regular shipment.

 

Many people are familiar with the Challenger disaster and the associated o-ring issue. What many don't know is it wasn't the extreme heat that caused the o-rings to fail. It was the unusually cold temperature the day of the launch. The reduced flexibility and dimensional shrinkage of the orings at the very low launch temperature created a leak(s) that ultimately brought down Challenger.

They may appear to be simple little black/brown round rubber rings. Missapplied, they can lead to catastrophic consequences.

 

As someone who has done my share of tech diving down to depths of 200 feet, aI can tell one one relatively inexpensive blown o-ring can REALLY ruin your day. It's not the place to save a few cents.

 

NOW THATS FUNNY, comparing the oring on the challenger to a drain plug o ring

 

Not funny to the Challenger crew, not funny to anyone that has lost tranny fluid or motor oil in 115 degree desert and not funny to the passengers on a Boeing 777 that lost hydraulic pressure because of a missapllied $ .28 oring. The jet engine manufacturer that paid $1.2 million in warranty fees for that defective $.28 oring still isn't laughing about it.

It's all a matter of who suffers and how far you fall.

 

Here's where I got mine; a lifetime supply too!!

http://www.mcmaster.com/#1201t24/=69ajq2