Manufacturer Part Number: ZMSCH90321|Material|Buna-NDash Number|321Inside Diameter (Inch)|Inside Diameter (Decimal Inch)|1.1880inInside Diameter (mm)|29.51Outside Diameter (Inch)|Outside Diameter (Decimal Inch - 4 Decimals)|1.5630inOutside Diameter (mm)|39.70Thickness (Inch)|3/16inThickness (mm)|5.33Hardness|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)|0.1875Width (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