bgm PRO oil seals made of high-quality and ethanol-resistant (E10) FKM/*
New: Now also for Vespa Wideframe, GS3, Faro Basso etc.: We have expanded our oil seal portfolio with modern oil seals from bgm and can now offer FKM oil seals for almost every classic Vespa:
PERFECT SIZE
The bgm PRO oil seals have the perfect dimensions to guarantee easy installation, optimum function and a long service life. The large shaft seal ring on the clutch side, e.g. on old Vespas, has a height of 7 mm on the bgm PRO instead of the 6.5 mm normally used by other manufacturers. This means that the bgm PROoil seal is based on the original factory specifications from Piaggio. If you have ever taken apart an old and original Vespa engine, you may have noticed that a large oil seal with a height of 7mm was installed at the factory.
rankshaft On old engines, the crankshaft bearings are 'floating'. This means that the bearing is not fixed and can be moved axially (horizontally to the side) in the engine housing. This displacement occurs, for example, under load due to the axial force of the helical-toothed primary drive. If the crankshaft moves too much, this can of course have an effect on the ignition and also on the function of the clutch. The aim should therefore be to have as little unnecessary play as possible. In Vespa engines, only the shaft seals determine the stop and thus the play of this floating bearing. The tolerances in the old engines are large and today, for example, we also use thicker housing seals, so 7 mm oil seals make sense!
WHY FKM
The material FKM (fluorocarbon rubber) is extremely resistant to
heat
friction and
fuel
Ethanol
Even super gasoline fuel E5 in Germany currently already has up to 5% ethanol blended in, with E10 even up to 10%, and the trend is rising. And did you know that this can vary from country to country? Have you ever noticed that your engine runs differently in France, for example? In other countries, the ethanol/alcohol content can be significantly higher. A conventional oil seal cannot withstand this increasing ethanol admixture and can swell or soften on contact with fuels containing ethanol, for example. The bgm PRO FKM oil seals, on the other hand, offer long-lasting protection. In addition, our oil seal with FKM is twice as temperature-resistant as conventional (blue) NBR oil seals. Further advantages of these modern shaft seals:
Extremely impermeable to gas
and very resistant to ageing
SUITABLE FOR WHAT? E10?
OK, so our Simmerrings from bgm have optimum
optimum dimensions and
state-of-the-art materials
but what are they suitable for now? An engine equipped with bgm PRO FKM oil seals can also be used in engines that run on E10 fuel (10% alcohol content) without any problems. The modern and high-quality brown FKM* sealing material is
permanently resistant to ethanol/alcohol and
also suitable for engines with high temperatures
and high speeds.
bgm PRO FKM oil seals are therefore suitable for all engines! Just play it safe and install the modern oil seals straight away. Whether for an original engine, mild tuning or extreme tuning and motorsport! For reasons of environmental protection and to ensure maximum flexibility of the sealing lip, we deliberately do not additionally coat the sealing lip with PTFE/Teflon®*
DOUBLE SAFE
The bgm PRO oil seals offer double sealing as an additional feature: All oil seals that seal to the outside, to the atmosphere, have a so-called dust lip. This is positioned in front of the actual sealing lip and keeps out
dust,
dirt and
moisture away.
This further increases the very good stability.
CONCLUSION
The bgm PRO oil seal set improves the installation clearance and offers an extremely long service life thanks to the excellent modern FKM materials, combined with perfect fuel compatibility: it is even E10 resistant! The oil seals replace the old ones and of course fit without modifications. Tip: We offer the oil seals individually as well as in a set and in a set with bearings!
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