We recommend this food grade lubricant (NSF H1) from LPS Labs for lubricating the Arc Roaster drum rod (in front and back).
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CRC Food Grade Silicone 03040 - 10 Wt. Oz., Multi-Purpose Silicone Lubricant for High Temperature Applications
KLUBER LUB Silicone Grease for Saeco Gaggia Espresso machines NH1 11-2 – Coffeesection
Espresso Machine Grease, 2 x 10g Silicone Grease Maintenance Kit for Care and Maintenance of All Coffee Machines, Food Grade Grease for All Expresso Machines
Food-Safe Silicone Lubricant – Whole Latte Love
Kaffelogic Nano 7 Coffee Roaster - Showroom Coffee
Coffee Machine Silicone Ring E61 8.5mm For Cafelat E61 Silicone Group Head Gasket Seal Espresso Coffee Machine Home Accessoriess - AliExpress
2 PACK Espresso Machine Grease, Silicone Grease-Coffee machine lubricant 5g Tube
The 3 Tiers of Food Grade Lubrication - H1, H2, H3
2 PACK Espresso Machine Grease, Silicone Grease-Coffee machine lubricant 5g Tube