Question 1

Will this rebuild kit fit both older and newer versions of the Hiblow HP-60 and HP-80?**

Accepted Answer

This kit is designed to match the standard dimensions of the HP-60 and HP-80, including the common replacement numbers HP-80-0110 and HP-80-0117. However, if your pump is an older serial number or a third-party rebrand, we recommend comparing your current diaphragm’s hole spacing and outer diameter to the photos in this listing. The majority of buyers install it without issue, but a small number of users with very early HP-80 units had to slightly enlarge the screw holes. When in doubt, measure your existing part before ordering.

Question 2

Are the included screws rust-resistant, and can I use them outdoors near a pond?**

Accepted Answer

The screws in this kit are standard zinc-plated steel, not stainless steel. For indoor aquariums or basement aeration, they’ll serve you well. If your pump sits outside in a humid or rainy environment, we’d suggest swapping these for stainless socket cap screws (M4 size) from a local hardware store—it’s a $2 upgrade that prevents any long-term corrosion concerns. Many pond users do this proactively during installation.

Question 3

I’m a beginner—do I need to buy any sealant or gasket glue along with this kit?**

Accepted Answer

No. The diaphragms create a seal through mechanical compression when you reattach the pump head. You shouldn’t use any thread sealant or silicone-based adhesive on the diaphragm lip, as it could interfere with the natural flex movement. A Phillips screwdriver (preferably a JIS-type bit for a better grip) and about 15 minutes are all you need. We also suggest watching any generic “Hiblow diaphragm replacement” video for a visual guide, since the listing doesn’t include a printed manual.

Question 4

Is this kit safe for use in a pond with live fish or an aquaponics system?**

Accepted Answer

The diaphragm material is standard EPDM rubber, which is widely used in aquarium air pumps. It does not leach chemicals into the air line, so it’s safe for fish and plants. However, this is not a food-grade FDA-certified part, so if you’re running a commercial aquaculture setup with strict certification requirements, you may want the official Hiblow OEM kit instead. For home ponds and hobby aquariums, this kit performs identically to the factory part.

Question 5

The listing says it includes “diaphragms and screws.” Does it also include the valve flappers or gaskets?**

Accepted Answer

This kit includes the two diaphragms and all eight screws needed for the rebuild. It does not include the internal flapper valves or the rubber gaskets that sit between the pump head and the manifold. In most cases, those valve discs are reusable—just clean them gently with water and ensure they lay flat. If your pump’s valves look cracked or warped, you’ll need to order a separate valve plate kit. Roughly 90% of users find the included parts sufficient for a full refresh.

Air Pump Diaphragm Rebuild Kit Replacement for Hiblow Hp-60/Hp-80 | Diaphragm Kit Compatible with Air Pump Models HP 80, HP 60, HP-80-0110, HP-80-0117, includes diaphragms and screws.

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