Stainless Steel Cushion Clamps - 2-1/2" - 10-Pack. Stainless steel cushion clamps prevent corrosion and are resistant to oils, acids and salt water.. Features:. Temperatures range from -50 to 300 F. Absorbs shock and vibration. Reduces unwanted noise. 1/4" clearance mounting hole. WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.