Dan Marx Posted March 1, 2018 Share Posted March 1, 2018 The attached radiator cap is unknown, at least to me. I have checked all my references and nothing matched the R-11 number. Thought it was AC Delco, but no match there. Any one have an idea of maker and /or application. Looks to be NOS, doesn't show any use on the rubber gasket, although it has a lot of "shelf wear". Thanks Dan dlmarx@bellsouth.net Link to comment Share on other sites More sharing options...
Guest Posted March 2, 2018 Share Posted March 2, 2018 Aftermarket Evrseal Brand. Fits 1939-48 Nash. Link to comment Share on other sites More sharing options...
Dave Henderson Posted March 2, 2018 Share Posted March 2, 2018 Patent number 1789990 was issued to Stant. Evrseal is a product line made by them. Stant appears on the lower edge of the box that is not visible or is missing. Link to comment Share on other sites More sharing options...
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