Molybdenum disulfide grease, also known as MoS2 grease, is a lubricant commonly used in industrial and automotive applications. It is typically composed of a mixture of molybdenum disulfide and mineral oil, and is most often used to reduce friction and wear in high-load applications. Common uses include automotive wheel bearings, industrial machinery, and other high-load applications.
When exposed to molybdenum disulfide grease, rubber seals may be prone to swelling, hardening, cracking, or even complete disintegration. The mineral oil in the grease can act as a solvent and degrade rubber, while molybdenum disulfide itself may increase the friction between the rubber and metal parts, accelerating wear and potentially leading to failure. It is important to use rubber seals that are compatible with molybdenum disulfide grease in order to avoid these issues.
Buna-N o-rings also referred to as NBR o-rings and Nitrile o-rings are the most widely used o-ring material in the word because of low cost, good mechanical performance with resistance to water, most basic oils, lubricants and some fuels, many pneumatic, hydraulic systems, and the default choice for basic applications. Buna-N o-rings are not recommended for exposure to sunlight, UV light, ozone and general outdoor weathering or hash chemicals, acids, keytones and many others.
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