The larger seal is 1.000" in diameter. The stem seal is the larger .625" in diameter. This larger seal is for Ranco valves with a tube/leg OD of approx .750" (3/4"). This would be the tube below the larger seal.
The larger seal is 1.000" in diameter. The smaller stem seal is .500" in diameter. The smaller seal is for Ranco valves with a tube/leg OD of .625" (5/8"). This would be the tube below the larger seal.
Posted 2018-04-03 3:55 PM (#561068 - in reply to #561062) Subject: Re: Ranco repair kit question
Expert 5K+
Posts: 9911
Location: Lower Mainland BC
wizard - 2018-04-03 3:13 PM
The tube/leg has an OD of 5/8" on the Ranco valves used for the FL cars - just check it for to be sure (roundabout 16mm)
The Ranco H16 was used on 60 & 61 models and most probably many other year models.
As far as I know the Ranco H16 was used from 1950 to ??
The big seal (the one that leaks water into the passenger footwell) can be replaced by a Balkamp BK 6601000 from a US NAPA store. About $10. I had to order in 10 for a small group buy because they are not available otherwise in Canada.
The small seal might leak but that one doesn't result in any spills, just a warmer core than you might want.
The Ranco H16s were used on a wide variety of cars: