Delta DC-380 Planer Part

[Vince Shriver]

My Delta DC-380 Planer has been leaking oil profusely. I found the problem is an o-ring on the shaft of the feed rate shifter that needs to be replaced. Problem: the part has been discontinued, I've tried McMaster Carr with no luck, and I don't know where else to go. Any suggestions would be most appreciated. Thanks in advance, Vince

[Richard Verwoest]

Trial and error?

[John Lanciani]

O-rings are basically generic, try an auto parts or farm & fleet type store.

[Tom Bussey]

Ace Hardware or True Value Hardware

[Bruce Wrenn]

McMaster will have it, but you need to know what size it is, or the actual number of the O ring. Probably an O ring from a Grizzly, Jet, PM or other planner will work. With a pair of HF calipers, you can measure opening and shaft size.

[Bill Dufour]

Measure the diameter of the cord then the inner and outer diameter. It could be metric or English units, where was it made? Are you sure it is just a o-ring and not a seal or a square ring seal.
Bil lD

[Mike Kees]

Not sure what size it is but I replaced mine with an O ring from my O ring kit so it is a common size.I sold my 380 about a year ago.

[Bill Dufour]

Harbor freight sells an O-ring assortment in a plastic divider case for under $10. If it fits that is probbably cheaper then ordering one. That is how I bough the metric woodruff key I needed for my lathe.
Bill D

[Mike Kees]

Vince while you have that thing apart make a new gasket for the chain case cover and install it when you put everything back together.

[Bruce Wrenn]

Vince while you have that thing apart make a new gasket for the chain case cover and install it when you put everything back together.


Would black RTV work instead of a gasket? Honda's small engines are put together with RTV, no gasket except carburetor and exhaust.

[Vince Shriver]

Thanks, Mike & Bruce. I changed the original gasket to a cork gasket, and it continued to leak. We then reused the original gasket (a neoprene type material) with a thin coat of Permatex which sealed it up, but then we found a new leak coming from the feed shift knob. The only oil seal we found there was a small o-ring buried deep on the feed shaft. Bruce the old gasket seems to be fine, so no issue there - right now it's finding the right o-ring behind the shift knob.

[Mike Kees]

My factory gasket was a piece of plastic that missed one top corner completely,leaked for years and when I finally pulled it apart I figured out why.

[Bruce Wrenn]

Because the 380 was made in either Brazil.or Tiawan, the O rig will probably be a metric size. Tonight, I bought the 225 piece (SAE) assortment from HF for $5.99, less 20%. Odds are one of these will fit your 380. Look at similar planer from Grizzly and see what they show for O ring.