The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - How to convert an oil bath air-filter to an air type filter on a 1956 Chevy Truck?

1project2many · 10-19-2018, 08:11 PM

You may end up at a place that services hydraulic cylinders for that O-ring. You may get away with Nitrile but I'd look for Neoprene or Viton if available. The "flat O ring" may be known as face cut, lathe cut, or square cut depending on the manufacturer. You might be shocked at the prices though. MSC direct shows a 7" OD Buna-N ring at about $14 but prices seem to go up as high as $300.

You could also buy sheets of Neoprene and make your own. Grainger sells a 12" X 12" X 1/8" sheet for $5.60. I'd feel like I could try twice at that price.

10-19-2018, 08:11 PM	#14
1project2many Registered User Join Date: Mar 2012 Location: Lakes Region NH Posts: 3,158	Re: How to convert an oil bath air-filter to an air type filter on a 1956 Chevy Truck You may end up at a place that services hydraulic cylinders for that O-ring. You may get away with Nitrile but I'd look for Neoprene or Viton if available. The "flat O ring" may be known as face cut, lathe cut, or square cut depending on the manufacturer. You might be shocked at the prices though. MSC direct shows a 7" OD Buna-N ring at about $14 but prices seem to go up as high as $300. You could also buy sheets of Neoprene and make your own. Grainger sells a 12" X 12" X 1/8" sheet for $5.60. I'd feel like I could try twice at that price.