MGB & GT Forum
Lockheed Brake Caliper O-Ring
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Topic Creator (OP)
Apr 21, 2024 10:37 AM
Top Contributor
 Joined 9 years ago
835 Posts
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I'm rebuilding an older set of Lockheed brake calipers I had sitting on my shelf and when I went to replace the seal between the two halves, I found that the o-ring doesn't seem to fit as I expected. These are the .500" inch caliper O-ring seals but the port on my calipers measure closer to .574" It's enough of a difference that if the o-ring shifts the ports will be outside the o-ring.
Do I have a set of oddball calipers or is there another part number I need to be looking at?
Do I have a set of oddball calipers or is there another part number I need to be looking at?
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20240421_102719.jpg 22.4 KB
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Topic Creator (OP)
Apr 24, 2024 06:49 PM
Top Contributor
Joined 9 years ago
835 Posts
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It's easy to find EPDM o-rings in the right size (dash 203) for this application, but I never did find the square cut EPDM o-rings in the right size. I didn't feel comfortable using the round profile o-rings in this application which is a shame because they come out to about $.15 each. Buna-N or Viton o-rings are out too because brake fluid sweats right through them.
In the end the Moss 180-285 o-rings were a perfect fit.
In the end the Moss 180-285 o-rings were a perfect fit.
Attachments:
20240423_191552.jpg 41.2 KB
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