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The GRACO 128787 is a stainless steel button head bolt
Replace O-rings during scheduled maintenance or at the first sign of leakage
Follow GRACO BES 300 equipment manual for specific installation instructions
Regularly check hardware for tightness and integrity
30–40 ft-lb for air cover bolts)
GRACO Packing O-Ring - (SKU: 154741) The GRACO 128787 is aThe GRACO 154741 Packing O Ring is a sealing component designed to prevent leaks and maintain pressure integrity within GRACO fluid handling equipment. The specific material is not specified for this part number in available sources, but similar GRACO packing o rings are often made from Buna N (nitrile rubber) for chemical and wear resistance. Its intended use is to provide a reliable seal in pumps and transfer systems, ensuring efficient and leak
