(2) each Fisher Regulator Diaphragms 050-04039 / 1-194-C / 194-C, not sure about part numbers, and part numbers were found on plastic bag they were in on warehouse shelving. OD of rubber is approximately 3" OD of larger metal ring 1-3/4" and OD in inner metal ring 5/8". Only one (1) shown in pictures but this listing is for total of two (2) each.
