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SR Series Ring Spacers
Standard Class 150 (150 lb.) Ring Spacers
Base Part Number: As shown here, the BASE PART NUMBER defines the Series (two characters), the material (one character), the nominal size, and the thickness TH. Use a decimal number to indicate the nominal size. Then, for thicknesses up to 6”, replace the TH with the decimal thickness. For thickness over 6”, contact factory. Note that the Class (or lb.) designation does not imply a pressure rating. For example, a 3/4” Class 150 PTFE Ring Spacer x 1” thick would be SRT-0.75-1
NPT Threading: For NPT threaded spacers, add to the Base Part Number the suffix NPT. For example, a 2” Class 150 PTFE threaded Ring Spacer x 1-1/2” thick would be SRT-2-1.5-NPT
Class 300 (300 lb.) Spacers: For Class 300 spacers, add to the Base Part Number the suffix 300. For other classes, contact the factory. For example, a 2” Class 300 PTFE threaded Ring Spacer x 1-1/2” thick would be SRT-2-1.5-NPT-300
Click here to view the Sizes of Class 150 and 300 Spacers and Flanges.
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