Checked their materials. Said neoprene was a 5 for oil and gas.
Ordered it in Buna 70. Ordered 10 as the cost was $1 each with a
minimum purchase of %10. Checked it out in one of their specialty
materials "Simriz". Quantity of 10 was $61 each!
If they fit, will share with some folks on 6-pack.
Chuck
-----Original Message-----
From: Vsnively@aol.com [mailto:Vsnively@aol.com]
Sent: Wednesday, February 04, 2004 3:22 PM
To: chuck.arnold@oracle.com
Cc: 6pack@autox.team.net
Subject: Re: Oil Filter O ring size
Chuck,
If I measured my sample correctly, you need a size -243. This is an
industry-standard o-ring size as a Quad Ring (Minnesota Rubber
registered trademark) directly replaces an o-ring. Dimensionally, it is
called out as 4-1/8" ID x 1/8" c/s (cross-section), nominally. Standard
material is Buna 70 (70 durometer). I believe that most automotive
applications, except brake fluid, call for neoprene. I would ask for
that, if not available, Buna will work fine up to approximately
220-250F. Viton (DuPont registered trademark) is rated to 450F. Both
temp ranges depend upon who you ask.
As far as I know, ethylene propylene (EP, EPR, EPDM) should ALWAYS be
used in brake fluid applications, as it will not swell when subjected to
brake fluid.
The standard oil filter seal is technically a square ring.
HTH,
Regards,
Vic Snively
'75 TR6
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