Donaldson Precleaner Jars

What do you do about the gasket? I haven't been able to find one I guess because the modern way to seal these jars is with a cap.

air cleaner application uses a large oring with the clamp ring 4 a gasket.

Thanks ag-mike, I must go look at mine I guess. I am in CO until middle of Aug and cat is in WA.

I don't remember how this is set up on mine although the last time I changed I had to find one of those big old fashioned red rubber gaskets. I think my jar screw on, is that possible?

John, I've never screwed the jar on, it is held in place with the turnbuckle screw to tighten the shaped metal clamp band. Still, I suppose if the band is not too tight, you could screw the jar on, particularly if it was fitted with one of the older red rubber canning seals that you can still purchase.

I was under the impression the jar had the type of flange used on the plastic version replacements. The v-flange mates well with the v-clamp arrangement. Is that not correct? I really don't know.

I was under the impression the jar had the type of flange used on the plastic version replacements. The v-flange mates well with the v-clamp arrangement. Is that not correct? I really don't know.

correct 4 the replacement plastic jar only, the v fitting is metal and not removable from the plastic jar plus it fits the v clamp groove . the glass jar uses a rubber oring, its placed on the jar so the v clamp clinches and seals it. o ring maybe available at ur hardware store.

here u go, the oring is placed below the glass flange, the tightened v clamp holds the jar by compressing the o ring to the glass flange.
this o ring is about shot!!

[attachment=30289]SAM_2881.jpg[/attachment]

bruce, looking at the photos again i wonder if the new jars flange is proud "purchase" enough to keep the o ring from riding up over it when tightening the clamp ?

Thanks ag-mike,
O-ring is a Cat # 5B3323. Still a good number.
Has a cross section diameter of 4.780"
Odd ball size, apparently not a dash # equivalent.