I don't think this product will change harness over time. It is firm but form-able as it comes out of the package and I expect it to stay just the same forever. I feels like a teflon tape on the surface. Smooth and slippery.
This is 100 times stronger than the graphite packing by Danco. That stuff is trash for most packing nut applications in my opinion. it has NO structure underneath its clay-like snake of cord. This is way way better. Strong but compressible. Not sticky Like teflon tape on surface it feels to be.
Thank you for contacting Danco. This valve packing only comes as shown with (1) valve packing. We do not offer a bulk packaging with more than one in bag at this moment.
I believe it's teflon.
Yes I think this will be perfect for that application. It is totally freeform so it fits any size of shaft and nut. It is small enough in diameter to make tight coils in a small space - my case was a 3/8" shaft an a 5/8" inside diameter packing nut. I got several turns inside that space and it seems tight and solid and doesn't leak.
Thank you for inquiring about a Danco product. To receive the specifications for this particular product or to learn about California's Proposition 65 Act, please call our Danco Technical Support Team at 800-523-5135 Option 2 during our business hours (Monday-Friday, 7am-5pm CST) or email: firstname.lastname@example.org
Thank you for your interest Danco products. Our Danco 80793 Self-Forming Valve Packing is made from PTFE (polytetrafluoroethylene), or better known in the market as Teflon. The 80794 Self-Forming Valve Packing has graphite coating with PTFE. This enhances the flexibility (easier to form), strength, chemical resistance, and temperature resistance of the packing. The lower temperature range is due to the fact it is only coated with PTFE.
Thank you for contacting Danco. Silicone grease would be better for what you are doing.