Manufacturer Part Number: ZMSCH90138|Material|Buna-NDash Number|138Inside Diameter (Inch)|2-1/8inInside Diameter (Decimal Inch)|2.1250Inside Diameter (mm)|53.64Outside Diameter (Inch)|Outside Diameter (Decimal Inch - 4 Decimals)|2.3130inOutside Diameter (mm)|58.72Thickness (Inch)|3/32inThickness (mm)|2.62Hardness|90Cross Section Shape|RoundMinimum Working Temperature (Deg F)|-40Maximum Working Temperature (F)|250Hardness Rating|Extra HardSizes Included|Minimum Working Temperature|Maximum Working Temperature|Durometer|Compatible Material|Petroleum ProductsFeatures|The Most Widely Used O-Ring Elastomer. Excellent Resistance To Petroleum Products. Excellent Compression Set. Tear & Abrasion Resistance. Should Not Be Stored In Direct Sunlight Or Near Motors Or Other Electrical Equipment Which May Generate OzoneColor|BlackFDA Approved|NoStandards|SAE; MIL-SpecCoupling Size|Inside Diameter Range|For Use With|Additional Information|Inside Diameter Range (Inch)|Durometer Shore A|Thickness (Decimal Inch - 4 Decimals)|0.0937Width (Decimal Inch - 4 Decimals)|Tube Outside Diameter (Fractional Inch)|Number Of Pieces|System Of Measurement|Number Of Sizes|Type|Product Service Code|UNSPSC Code|31401503