O ring groove design
I'm trying to improve the performance of the water pump in my steam
powered cycle. It consists opf a 7/16" aluminum piston witrh 2 O rings at the end operating in a bronze cylinder. I'm using a clearence of .001" between the piston and cylinder. The dimension of the rings is 7/16 od X 5/16 id X 1/16 thick. I've been having leakage problems and have tried O ring grooves that had a square cross section a d half round. I'm looking for info on the best shape and tolerance for the grooves. I can't seem to find anything in Machinery's handbook. Engineman http://engineman69.home.comcast.net/...atewheels.html |
O ring groove design
"engineman" wrote in message ... I'm trying to improve the performance of the water pump in my steam powered cycle. It consists opf a 7/16" aluminum piston witrh 2 O rings at the end operating in a bronze cylinder. I'm using a clearence of .001" between the piston and cylinder. The dimension of the rings is 7/16 od X 5/16 id X 1/16 thick. I've been having leakage problems and have tried O ring grooves that had a square cross section a d half round. I'm looking for info on the best shape and tolerance for the grooves. I can't seem to find anything in Machinery's handbook. Engineman http://engineman69.home.comcast.net/...atewheels.html Been a while since I did much O ring work. But Parker did have the tables you need |
O ring groove design
On Tue, 27 Jan 2009 21:12:27 -0800 (PST), engineman
wrote: I'm trying to improve the performance of the water pump in my steam powered cycle. It consists opf a 7/16" aluminum piston witrh 2 O rings at the end operating in a bronze cylinder. I'm using a clearence of .001" between the piston and cylinder. The dimension of the rings is 7/16 od X 5/16 id X 1/16 thick. I've been having leakage problems and have tried O ring grooves that had a square cross section a d half round. I'm looking for info on the best shape and tolerance for the grooves. I can't seem to find anything in Machinery's handbook. Engineman http://engineman69.home.comcast.net/...atewheels.html Check out http://o-ring.info/en/downloads/technical-manual/ |
O ring groove design
engineman wrote:
I'm trying to improve the performance of the water pump in my steam powered cycle. It consists opf a 7/16" aluminum piston witrh 2 O rings at the end operating in a bronze cylinder. I'm using a clearence of .001" between the piston and cylinder. The dimension of the rings is 7/16 od X 5/16 id X 1/16 thick. I've been having leakage problems and have tried O ring grooves that had a square cross section a d half round. I'm looking for info on the best shape and tolerance for the grooves. I can't seem to find anything in Machinery's handbook. Engineman http://engineman69.home.comcast.net/...atewheels.html How about using a cup style seal? They are common in brake master cylinders. -- Steve W. |
O ring groove design
On Tue, 27 Jan 2009 21:12:27 -0800 (PST), engineman
wrote: I'm trying to improve the performance of the water pump in my steam powered cycle. It consists opf a 7/16" aluminum piston witrh 2 O rings at the end operating in a bronze cylinder. I'm using a clearence of .001" between the piston and cylinder. The dimension of the rings is 7/16 od X 5/16 id X 1/16 thick. I've been having leakage problems and have tried O ring grooves that had a square cross section a d half round. I'm looking for info on the best shape and tolerance for the grooves. I can't seem to find anything in Machinery's handbook. Engineman http://engineman69.home.comcast.net/...atewheels.html The Parker o-ring handbook is available as a 9 MB download. http://www.parker.com/literature/ORD...g_Handbook.pdf There's a certain amount of compression necessary to get an effective seal with an o-ring. The necessary data is pretty well covered in the book, as well as gland dimensions for static and dynamic seals, chemical compatibility, etc. Pete Keillor |
O ring groove design
Thanx, Don. Duly bookmarked for future reference.
Bob Swinney "Don Foreman" wrote in message ... On Tue, 27 Jan 2009 21:12:27 -0800 (PST), engineman wrote: I'm trying to improve the performance of the water pump in my steam powered cycle. It consists opf a 7/16" aluminum piston witrh 2 O rings at the end operating in a bronze cylinder. I'm using a clearence of .001" between the piston and cylinder. The dimension of the rings is 7/16 od X 5/16 id X 1/16 thick. I've been having leakage problems and have tried O ring grooves that had a square cross section a d half round. I'm looking for info on the best shape and tolerance for the grooves. I can't seem to find anything in Machinery's handbook. Engineman http://engineman69.home.comcast.net/...atewheels.html Check out http://o-ring.info/en/downloads/technical-manual/ |
O ring groove design
engineman wrote: I'm trying to improve the performance of the water pump in my steam powered cycle. It consists opf a 7/16" aluminum piston witrh 2 O rings at the end operating in a bronze cylinder. I'm using a clearence of .001" between the piston and cylinder. The dimension of the rings is 7/16 od X 5/16 id X 1/16 thick. I've been having leakage problems and have tried O ring grooves that had a square cross section a d half round. I'm looking for info on the best shape and tolerance for the grooves. I can't seem to find anything in Machinery's handbook. Engineman http://engineman69.home.comcast.net/...atewheels.html Quad rings might be a better solution. They seal better and last longer in most applications. John |
O ring groove design
john wrote: engineman wrote: I'm trying to improve the performance of the water pump in my steam powered cycle. It consists opf a 7/16" aluminum piston witrh 2 O rings at the end operating in a bronze cylinder. I'm using a clearence of .001" between the piston and cylinder. The dimension of the rings is 7/16 od X 5/16 id X 1/16 thick. I've been having leakage problems and have tried O ring grooves that had a square cross section a d half round. I'm looking for info on the best shape and tolerance for the grooves. I can't seem to find anything in Machinery's handbook. Engineman http://engineman69.home.comcast.net/...atewheels.html Quad rings might be a better solution. They seal better and last longer in most applications. John http://www.marcorubber.com/quad_rings.htm |
All times are GMT +1. The time now is 05:24 AM. |
Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004 - 2014 DIYbanter