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Product ID : PB170RK
PB170RK -, OEM=Turbo Pumps, Part Type=Kits, Description=KIT;REPAIR, Pump Models=BLAZER;TPH/TPU170
Description
More details on associated web page:

Repair kits for Pfeiffer, Leybold, Varian, & Edwards Turbo Pumps

(by Precision Plus)