The obvious place to get Leslie parts is from your favorite, friendly HammondTechnician.
Interestingly, AntiqueElectronicSupply has added select Leslie parts and hardware to their 2003 catalog.
The fast motor O-ring (which the slow motor drives against) is AS-568 size 334. You can obtain them from many industrial parts houses. Typically the part number will be OR-334. (McMasterCarr 9452K54 ?)
The rubber grommet used to mount the lower rotor bearing brackets is 5/16" ID, 1" OD", (MS 35489 No.10) (AN 931 No.5-12) (McMasterCarr 9307K77).
| A | B | C | D | E | ||
| 5/16" | 1" | 5/16" | 1/16" | 3/4" |
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Parts and retro style HalfMoonSwitches are being manufactured and sold by HalfmoonElectronics. (Also note that HammondSuzuki now makes a new HalfMoonSwitch.)
HalfmoonElectronics also carry hard to find parts such as output transformers.
ValhallaWoodworking makes reproduction cabinets and replacement wood parts for Leslies (and Hammonds).
Also see LeslieBearings and 
Category:PartsSources.
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