Assuming two ADBVs have the same mechanical features, and the only difference is the material. Also assume they are subjected to the same usage, how much more service life can silicon provide?
From the above quote, you can see that the advantage silicone has over nitrile depends on how long the ADBV is exposed to temperatures in excess of 258F. I have no idea if such a temperature is commonly reached in the oil filter area (remember, it's not only the oil temperature we're concerned with here, but the temperature of the surrounding metal, as well).quote:
“Wix research has shown that nitrile rubber filter components will harden when exposed to temperatures above 258 degrees Fahrenheit for an extended period of time, while silicone components will withstand temperatures up to 450 degrees."
Indeed there are differences, but a quick search of McMaster-Carr however shows nitrile only up to 201-300deg F, where as silicone goes up to 600deg F. It also shows nitrile as being almost 1/3 the price of silicone.quote:
Originally posted by labman:
... Not all Nitriles are going to be alike. Same with the Silicones.
Which means what, exactly?quote:
Originally posted by Filter guy:
I think the nitrile used is a 70 durometer version.
That tells us how hard it is. And little else...quote:
Originally posted by G-Man II:
Which means what, exactly?quote:
Originally posted by Filter guy:
I think the nitrile used is a 70 durometer version.
I believe FilterGuy is indicating that the Nitrile ADBVs are molded from 70 durometer material.quote:
Originally posted by Filter guy:
I think the nitrile used is a 70 durometer version.
Note: Don't percieve the temperatures listed as absolute limits since individual compounds can be tweaked for slightly better performance.code:
* Silicon HNBR
Max Intermittent Temp(C) 536F 302F
Max Continuous Temp(C) 392F 257F
Lowest Temp -76F -22F
Oil Resistant Yes Yes
Weather Resistant Yes Yes
Durometer Range(Shore A) 20-80 50-95
Good question. Silicone is more expensive and ''better''. However if you are using a filter with Nitrile, and do not have start up noise, fast oil pressure build on start, and finally a filter full of oil when you change it, I see no reason to cough up for a filter with silicone. Perhaps Ray H's ''"I-pay-the-most" oil snoots!'' would. (snots, snobs?) See http://theoildrop.server101.com/ubb/ultimatebb.php?ubb=get_topic;f=6;t=002746;p=1#000002quote:
Originally posted by LarryL:
Most oil filters use nitrile, even high priced ones like Amsoil and Mobil 1. Some like Wix and Purolator Prem One use silicone but not many. So is nitrile good enough?