Parker bonded seal washers create compression between a bolt and flange to eliminate leakage problems in screw connections, ideal for applications in air conditioning systems, gas regulators and fuel pumps. These units feature elastomer sealing lip that is bonded to a stainless steel carrier, offering excellent corrosion resistance and avoiding over-compression of the elastomer beyond its elastic limit to prevent seal destruction. These seal washeres are capable of withstanding temperatures ranging from -425 to 1200 degrees F and are available in 5/8 and 7/8 inch hex sizes.