deanostoybox
Member
Pulled top cover, pulled cylinder, popped out piston, wonder why it leaks</p>
Here is a picture of the front or O-ring side of the remnants of the backup washer. At first sight I thought it was leather. On first touch, it obviously wasn't.</p>
<a href="https://deanostoybox.com/8N-sediment-bowl/o-ring-side-of-backup-washer.jpg">
Here is a picture of the back side of the remnants of the backup washer.</p>
<a href="https://deanostoybox.com/8N-sediment-bowl/back-side-of-backup-washer.jpg">
Hit on end with my BIC lighter, bust into yellow flame with a lot of black smoke. Smells like burning tire. Definately not Teflon (PTFE). PTFE is slick. This is not. More rubbery, but harder than O-ring "rubber". More like a dried out O-ring in hardness, but still plastic like vinyl.</p>
Here is a PTFE backup washer.</p>
<a href="https://deanostoybox.com/8N-sediment-bowl/teflon-backup-washer.jpg">
PTFE does not support combustion. You have to try pretty hard to burn it. You don't want to smell it when it burns. Pretty nasty stuff.</p>