ROCOL SAPPHIRE® 1 & 2 are revolutionary long life bearing greases for optimum lubrication. Suitable for all types of ball, roller and plain bearings. Designed for medium to heavy-duty ball, roller and plain bearings. They are ideal for use in slower moving bearings operating under extreme conditions such as shock loads and wet environments found in all types of industrial applications. ROC12171 and ROC12176 are SAPPHIRE®2.ROC12601 is SAPPHIRE®1, which is softer. Specification: Temperature Range: -30°C to +150°C.