Penrite Rubber Grease is a premium quality, NLGI No. 2, general purpose, non- harmful clay based grease containing castor oil for use when contact with natural and/or synthetic rubber is likely to occur. Penrite Rubber Grease can be used for automotive, industrial and consumer rubber parts such as hydraulic dust covers, braking system components, seals and washers. It is specially designed for use on rubber components in hydraulic systems where compatibility with the rubber seals is essential. It is also suitable for use with other rubber components such as gaiters or boots used on these systems. It is also ideal for use as an automotive tyre mounting aid. Penrite Rubber Grease is also recommended in other applications where the resistance to hydrocarbon solvents is required, such as automotive shock absorbers. Rubber Grease is NOT recommended for the lubrication and protection of brake backing plates and plunger housings.