Graco 188857 Santoprene Diaphragm for Husky 1040

Reliable Santoprene Diaphragm: Graco 188857

• Graco Husky 1040 – air‑operated diaphragm pump replacement diaphragm
• Graco SaniForce 1040 – compatible sanitary diaphragm pump

Product Overview

The Graco 188857 Santoprene Diaphragm is a flexible, durable elastomer diaphragm designed to separate the air and fluid sections inside Graco diaphragm pumps. Its Santoprene construction improves resistance to wear, fatigue, and chemicals while maintaining smooth, reliable pumping action in demanding applications.

Key Features

Installation & Usage Tips

• Always release pump air and fluid pressure before disassembly.
• Inspect housing seals and O‑rings while replacing the diaphragm.
• Lubricate mating surfaces lightly before installation for smoother seating.

Frequently Asked Questions