Topic: Sierra Low Unit Seal Kit Charts? – Antique Outboard Motor Club,Inc

This topic has 6 replies, 3 voices, and was last updated 1 year, 5 months ago by Buccaneer.

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May 5, 2024 at 9:23 am #287603
Buccaneer
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Anyone have a Sierra lower unit seal kit chart / list for the 50’s & 60’s OMC
outboards? The only one I have is for much newer units.
Thanks.

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May 5, 2024 at 3:44 pm #287613
Bob Wight
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Buc – here’s one on Marine Engine that goes back into the 50s and 60s.

https://www.marineengine.com/parts/sierra-marine/quick-list/johnson-evinrude-sierra-gearcase-seal-kit.html

Bob

1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1955 Johnson QD-16
1957 Evinrude Fastwin 18
1957 Evinrude 3022
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20

“Every 20 minute job is only a broken bolt away from a 3-day project.”
"Every time you remove a broken or seized bolt an angel gets his wings."
May 5, 2024 at 5:44 pm #287617
Buccaneer
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Thanks Bob. I thought ME might have had info., but I couldn’t find any link
to it on their homepage. Bookmarked now.
Strangely, they don’t list a seal kit for a 1956 QD 10 hp that I may be
working on for my cousin.

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May 5, 2024 at 7:42 pm #287629
frankr
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Nope, that has that prop shaft seal that Sierra doesn’t have available
May 5, 2024 at 9:27 pm #287640
Buccaneer
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frankr wrote:

Nope, that has that prop shaft seal that Sierra doesn’t have available

Also OMC’s version is N/A anymore either.
Looks like the best bet is a CR 6280

Inches (IN) Millimeters (MM)

Shaft 0.625 15.88

Bore 1.250 31.75

Width 0.313

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May 5, 2024 at 10:05 pm #287641
Bob Wight
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National Seals #471264 also works for that size shaft and housing bore, but is 0.250 in width and their #470018 seal is 0.375 in width. The CR seal you found is likely the closest fit to original.

Bob

1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1955 Johnson QD-16
1957 Evinrude Fastwin 18
1957 Evinrude 3022
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20

“Every 20 minute job is only a broken bolt away from a 3-day project.”
"Every time you remove a broken or seized bolt an angel gets his wings."
May 6, 2024 at 9:17 am #287647
Buccaneer
Participant
US Member
Bob Wight wrote:

National Seals #471264 also works for that size shaft and housing bore, but is 0.250 in width and their #470018 seal is 0.375 in width. The CR seal you found is likely the closest fit to original.

Thanks Bob, I ordered the CR 6280 last night.

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	Inches (IN)	Millimeters (MM)
Shaft	0.625	15.88
Bore	1.250	31.75
Width	0.313