Hebei Hankai custom oil seals


Shaft oil seals typically consist of a flexible sealing lip made from elastomeric materials such as rubber, polyurethane, or silicone, encased in a sturdy outer shell. The sealing lip makes contact with the rotating shaft, creating a barrier that effectively retains lubricants while blocking unwanted particles. The design may include additional features such as garter springs to maintain contact with the shaft and improve sealing effectiveness over time.
shaft oil seal




Another example is BHT (butylated hydroxytoluene) and BHA (butylated hydroxyanisole), used to prevent oils and fats from going rancid. While they are deemed generally recognized as safe by the FDA, these preservatives have been associated with a range of health concerns, including hormonal disruptions and increased cancer risk in animal studies. Critics argue that more extensive human studies are necessary to fully understand their long-term effects.
bad preservatives
