Fettling Blackburn pumps

[ASC1951]

After many years' use my Blackburn frame pump has started to wheeze. Everything works except that it won't hold pressure. Almost certainly the O ring has worn beyond the point where silicon grease provides a seal.

My LBS will sell me a rebuild kit for £6. Yes, that contains an O ring, but it also has two more of them and a dozen other bits that I am never going to use, as well as loads of packaging. Can you get the O rings on their own anywhere?

 

[NormanD]

Only place I've seen them is Here

 

[ASC1951]

Only place I've seen them is Here

Ah, I didn't spot that. Why can't they sell it without the tub of grease? My existing pot will last me my lifetime and beyond...

 

[heliphil]

try putting a thin layer of tape in the groove where the o ring goes - this will lift the o ring up enough to get a good seal again - costs virtually nothing

 

[fixedfixer]

What size is it? Google 'Toolzone 80pc Rubber O Rings In Storage Box' and you'll get 80 assorted sizes for £1.99 from Amazon. Bet one of those will fit because odds on it is a standard part.

 

[ASC1951]

What size is it? Google 'Toolzone 80pc Rubber O Rings In Storage Box' and you'll get 80 assorted sizes for £1.99 from Amazon. Bet one of those will fit because odds on it is a standard part.

£3.95, according to Amazon http://www.amazon.co...e/dp/B002NH8I7A Plus delivery.
I reckon the inside diameter of the barrel is almost exactly an inch, because the O ring housing is a touch over 7/8". That Toolozone box doesn't seem to have any quite big enough.

It's not the cost, I just don't like buying stuff I will throw away. But I would rather get a bucket of O rings that I might use than a Blackburn Kit that I'm fairly sure I won't.

 

[Tynan]

someone ran over my zefal frame pump last month

a spanking new one from my slightly pricey LBS was £8.95

 

[fixedfixer]

Not that one but this one, link it has some 1 inch diameter and the 7/8th you're after. Take your point about having to buy so many when you only want one. What you really need is a little hardware shop and a bloke in a brown coat who will sell you just one for a couple of pence (that old 'd's money)

 

[ASC1951]

What you really need is a little hardware shop and a bloke in a brown coat who will sell you just one for a couple of pence (that old* 'd's money)

"Got any Os?"
http://www.youtube.c...h?v=qu9MptWyCB8

*I can remember getting farthings in my change!

 

[tyred]

Take the old o-ring to a decent motor factors and they should be able to match it with something.