Subject: oil leak Author: E. C. Bud Durdle Date: Jul 7, 2001, 9:31 PM Post ID: 1707406748 Robert Hawkes wrote: Tom,OK, I believe you, but can you tell by sight or feel the differencebetweenneoprene o-rings and Buna o-rings? Bob HawkesSo what's the difference between buna and nitrol