QUOTE(banzaitoyota @ Jan 28 2004, 04:09 PM)

yes

O-RING - OIL SEAL OUTER 0820-11-341 4 Green

O-RING - OIL SEAL INNER 1202-11-343 4 Green



- do not use 8341-11-343 black o-rings.



From MAZDACOMP















Reffering to the items above. what are these made from? I have the viton oil rings from RA that I am using. I have had to pull the motor out due to excess blow by. After reading this thread, I am considering using the stock oil rings when I put it back together.



Viton is better at standing up to chemicals like petrolium vs silicone, but silicone is better at withstanding heat. Are the green factory oil orings just silicone, or are they teflon encapsulated as mentioned above?



mike

Stock factory green o-rings are all silicone.

I think the black ones are Viton.





-Ted