Self-lubing O-rings

October 2017

A wide variety of food and beverage manufactures require FDA-grade compliant materials. What are the most common FDA-grade materials for o-rings?

Temperature is critical.

Chemical compatibility of common elastomers

Durometer is one of several measures of hardness of objects like rubber and plastic.

COMMON SEAL FAILURES

Oil seals – often called grease, fluid or dirt seals – very simply need to stop the fluid that is inside from leaking out.

A mechanical seal is simply a method of containing fluid within a vessel (typically pumps, mixers, etc.) where a rotating shaft passes through a stationary housing or occasionally, where the housing rotates…

When high temperature conditions require high tensile strength and resistance, one elastomer comes to mind:Hydrogenated Nitrile Butadiene Rubber (HNBR).

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We mostly think of back up rings as being used with O-Rings. But they also are used with T-seals (an O-Ring substitute) as well as various styles of piston seals and occasionally with U-Seals.