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Old 03-30-09, 05:59 PM   #1
SlimAgainSoon
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Silca head washer size?

I've got a brass Silca head, the "bell shape," that I put on a Blackburn pump when the pump head wore out. Works great, but now it needs a new washer.

My LBS doesn't have the washers. I'm hoping Ace Hardware does ... but I need to know the correct size (I could use the original to size it, but it is now badly worn).

Does anyone know the size of the washer -- the outside and inside diameters?

Obscure question, I know ... this will put BF to the test.
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Old 03-30-09, 06:17 PM   #2
rhenning
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Have your bike shop order you some. They are not a plumbing sized washer. Roger
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Old 03-30-09, 06:20 PM   #3
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It's not a standard faucet washer. The OD is 0.803" and the valve hole is 0.158" initially (it gets bigger with use). The edge thickness is 0.162" but there is a raised circular "platform" 0.592" diameter and a conical projection in the center around the valve hole. Lowes or Home Depot aren't going to have these things and probably not a suitable substitute.

Most of the better mailorder/internet bike shops have them and here is one source:

http://www.thethirdhand.com/index.cg...d=318454727151
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Old 04-01-09, 01:12 PM   #4
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That didn't take long -- 20 minutes!

Thanks for the info.

I'll get the shop to ship some in.
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