Finish Line Teflon Synthetic Grease

Product Information

Silicone oils suspended in a soap of lithium, calcium, PTFE, fumed silica etc. Lithium soap based silicone greases have excellent properties for lubricating bicycle bearings, but are outrageously expensive. Because there are greases that cost a lot less, while being good enough, and because it makes no sense for lubrication after a few seasons to cost more than a new bearing, silicone greases are not an optimal choice. In my city, temperatures rarely go below -20, mostly stay up to -10 in the coldest of months, but as far as salt protection goes (our road companies don’t spare on the salt as soon as there’s any snow), Lithium soap based grease seems to work fine – I also ride all year long. Minimal 4 ball weld test of 1000 N or better was a safe margin recommended by the post’s co-author, an expert on the subject, Stevan Dimitrijević. If you have relevant data that proves otherwise, please share it, I’d be more than happy to link it and correct the data in the post. As for Mobil – any of the two should be OK. 220 has a slightly better washout resistance, while the 100 is a bit better at low temperatures. For extreme heat, I’d prefer 220, for extreme cold, the 100. The more rain/mud/water, the more I’d be inclined toward the 220 – which is a slightly better “multipurpose grease” as well I think.

Besides, open grease shelf life is about 5-7 years, closed new lid can be safe to use for about 10. After that, they might degrade – drying out, or base oil separating.

Customer reviews

Special greases with added solid lubricants, such as graphite, or molybenum disulfide (MoS 2). Usually used for high load and pressure bearing greases. Special additives, when they are notneeded, in addition to increasing the price, can have a negative affect on grease properties for the intended use! As for the greases, good quality calcium based ones aren’t bad. Not much worse than good quality lithium based ones. Bicycle bearings, whether on wheels, cranks, or fork, are usually ball bearings, i.e. they consist of balls, trapped between two races. These bearings are almost never made to be easily re-lubricated from the outside, without disassembling them, so frequent lubrication would take a lot of time. Shimano is the primary wheel manufacturer that uses cup and cone. MOST others do not. Please update your own knowledge base. In addition Shimano bearings do not use grease to ‘hold them in place.’ So that argument is worthless again.

Because tetrafluoroethylene can explosively decompose to tetrafluoromethane (CF 4) and carbon, special apparatus is required for the polymerization to prevent hot spots that might initiate this dangerous side reaction. The process is typically initiated with persulfate, which homolyzes to generate sulfate radicals:PTFE is a thermoplastic polymer, which is a white solid at room temperature, with a density of about 2200kg/m 3 and a melting point of 600K (327°C; 620°F). [20] It maintains high strength, toughness and self-lubrication at low temperatures down to 5K (−268.15°C; −450.67°F), and good flexibility at temperatures above 194K (−79°C; −110°F). [21] PTFE gains its properties from the aggregate effect of carbon-fluorine bonds, as do all fluorocarbons. The only chemicals known to affect these carbon-fluorine bonds are highly reactive metals like the alkali metals, and at higher temperatures also such metals as aluminium and magnesium, and fluorinating agents such as xenon difluoride and cobalt(III) fluoride. [22] At temperatures above 650–700°C (1,200–1,290°F) PTFE undergoes depolymerization. [23] Property