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Nonfood Compounds Program: Food-Grade Lubricants (Report). NSF International. April 2024. Food-grade lubricants exported into or imported out of Brazil must be certified to ISO 21469. [5] A database of all ISO 21469 certified lubricants is maintained at the NSF's website. [6] It is noteworthy that ISO 21469 has not been updated since 2006.
There are greases suited for high or extremely low temperatures, vacuum applications, water-resistant and weatherproof greases, highly pressure-resistant or creeping types, food-grade, or exceptionally adhesive greases. [14]
Electrical utilities use silicone grease to lubricate separable elbows on lines that must endure high temperatures. Silicone greases generally have an operating temperature range of approximately −40 to 200 °C (−40 to 392 °F) with some high-temperature versions extending this range slightly.
H1 lubricants are food-grade lubricants used in food-processing environments where there is the possibility of incidental food contact. H2 lubricants are industrial lubricants used on equipment and machine parts in locations with no possibility of contact. H3 lubricants are food-grade lubricants, typically edible oils, used to prevent rust on ...
PDMS is viscoelastic, meaning that at long flow times (or high temperatures), it acts like a viscous liquid, similar to honey. However, at short flow times (or low temperatures), it acts like an elastic solid, similar to rubber. Viscoelasticity is a form of nonlinear elasticity that is common amongst noncrystalline polymers. [5]
The test grease is inserted into the container and the plunger is stroked 60 times while the test apparatus and grease are maintained at a temperature of 25 °C. Once worked, the grease is placed in a penetration test apparatus. This apparatus consists of a container, a specially-configured cone and a dial indicator. The container is filled ...