25mm Metric Pipe Cap
SKU: PVC-CAP-25
- Leak-Proof Termination: Provides a permanent, high-strength seal for the end of 25mm metric PVC plumbing runs.
- Precision Metric Fit: Sized specifically for 25mm metric pipe (approx. 1" OD), the standard for Reef Octopus return and recirculating lines.
- Industrial Strength: Constructed from high-impact, industrial-grade grey UPVC for a professional look and superior durability.
- Saltwater Safe: 100% non-corrosive and chemically inert; safe for all sensitive marine reef and freshwater systems.
- Streamlined Design: Low-profile rounded end fits easily into tight sump spaces and specialized filter compartments.
- Ideal For: Capping manifold branches; sealing unused reactor ports; terminating custom skimmer modifications.
25mm Metric Pipe Cap
The 25mm Metric Pipe Cap is a precision-engineered termination fitting designed for professional water management in high-end aquarium systems. Specifically sized for 25mm Metric PVC pipe, this cap is a fundamental component for sealing off unused plumbing branches, terminating manifold headers, or closing ports on specialized filtration hardware like Reef Octopus protein skimmers.
In custom reef plumbing, reliability is critical to prevent leaks and maintain system pressure. This pipe cap ensures a permanent, fail-safe seal that can withstand the constant vibration and environmental stresses of a marine sump. Unlike standard white residential fittings, this cap is manufactured from industrial-grade grey UPVC, offering higher impact resistance and a "factory-clean" aesthetic that matches high-end Reef Octopus and European filtration gear. The deep internal socket is precision-molded to maximize surface contact during solvent welding, ensuring a high-strength, leak-proof bond.
Key Features
True Metric Calibration: Fits 25mm OD metric pipe—essential for maintaining factory Reef Octopus and Maxspect hardware.
Superior Durability: Thick-walled UPVC construction is designed for the rigors of long-term saltwater immersion and chemical exposure.
Non-Toxic Material: Safe for all aquatic life; will not leach heavy metals, BPA, or harmful chemicals into the water column.
Snug Fitment: Precision-molded to ensure a square, seated fit onto the pipe for easier alignment and a professional finish.
High-Strength Bond: Deep socket design provides a large surface area for a secure, permanent solvent weld.
Ideal For
Custom Sump Manifolds: Closing off the ends of 25mm distribution blocks.
Skimmer Repairs: Sealing secondary air or water ports on Reef Octopus skimmer bodies.
Reactor Plumbing: Terminating feed lines on specialized media reactors and UV sterilizers.
Images shown are representative of the product family. Materials, sizes, and configurations may vary.
What’s Included:
(1) 25mm Metric Pipe Cap
Specifications:
Size: 25mm
Connection Type: Slip (Socket)
Material: Industrial Grade Grey UPVC
Compatibility: 25mm Metric Pipe ONLY
- Ensure the 25mm metric pipe end is cut perfectly square and thoroughly deburred.
- Perform a dry-fit to ensure the pipe seats fully into the bottom of the cap.
- Apply a layer of PVC primer to the pipe end and the internal socket of the cap.
- Apply a light coat of PVC solvent cement to both the pipe and the cap.
- Push the cap onto the pipe and give it a slight quarter-turn to distribute the glue evenly.
- Hold firmly for 30 seconds. Allow at least 1 hour of cure time before introducing water pressure.
Pro Tips:
- Verify Your Size. A 25mm metric cap will not fit standard 3/4" or 1" USA Schedule 40/80 pipe. 25mm is approximately 0.98 inches, whereas US 1" pipe has a 1.315" OD. Always use a caliper to confirm your pipe's outer diameter before ordering.
- Professional Finish. For a high-end "factory" look, use clear PVC primer rather than purple. This prevents messy stains on the grey fitting and maintains the professional aesthetic of your Reef Octopus equipment.
- Future-Proofing. If you intend to extend the plumbing line in the future, consider installing a 25mm Metric Union before the cap. This allows you to unscrew the cap and continue the plumbing run later without having to cut the pipe.