High Quality Square Black PP Plastic Cap for Fence Post PFC-38x25Hot-selling square black PP plastic cap for fence posts and steel tubes. Low price, high quality, widely used in Australia, New Zealand, and European markets.MaterialPP (Polypropylene)FinishBlack (standard); custom colors availableMOQ5,000 pcsKey FeaturesMade from premium UV-stabilized PP for long outdoor service lifeSecure fit design prevents cap from blowing off in windBlack color is fade-resistant and maintains appearance over yearsProtects fence post tops from water ingress and corrosionLightweight and easy to install by hand – no tools requiredSuitable for both residential and commercial fencing applicationsCompetitive pricing for bulk orders – ideal for distributorsOEM/ODM available: custom sizes, colors, and brandingTechnical SpecificationsSpecificationValueItem No.PFC-38X25MaterialPP (Polypropylene)ColorBlack (standard); custom colors availableTube Size38x25mm (fits standard rectangular tube)TypeExternal cap (fits over tube end)Top StyleFlat topUV ResistanceYes – UV stabilized PPMOQ5,000 pcsPackaging1,000 pcs per cartonApplicationFence posts, gate posts, steel tubes, furniture legsProduct Description<p>The PFC-38X25 Square Black PP Plastic Cap is one of our best-selling plastic accessories for fence posts and steel tubes. Made from premium polypropylene (PP) material, this plastic cap offers excellent durability, UV resistance, and weather resistance at a competitive price point.</p> <p>This plastic cap is designed to fit snugly over the top of square fence posts, providing protection against rain, dirt, insects, and UV damage. The black color is fade-resistant and maintains its appearance even after years of outdoor exposure. The cap's ribbed interior ensures a secure fit on standard square tube sizes.</p> <p>Widely exported to Australia, New Zealand, the UK, and other markets, these plastic caps are trusted by fence contractors and hardware distributors worldwide. Available in various sizes to suit different post dimensions, with custom colors and sizes available for OEM/ODM orders.</p>FAQWhat plastic materials are used in your fence and gate accessories?We use UV-stabilized high-density polyethylene (HDPE), polypropylene (PP), ABS, and glass-filled nylon (PA66-GF30) depending on the application. All materials are RoHS compliant, free from heavy metals, and formulated to resist UV degradation, ensuring colour stability and mechanical strength for 10+ years outdoors.Are your plastic accessories suitable for outdoor and UV-exposed environments?Yes. All outdoor plastic accessories are manufactured with UV stabilizers and carbon black or pigment additives that prevent UV degradation. Our products pass 1,000-hour UV weathering tests (ASTM G154) with less than 5% change in mechanical properties. They are suitable for tropical, desert, and coastal climates.What colours are available for plastic fence accessories?Standard colours include black, white, grey, brown, and green. Custom RAL colours are available for orders of 5,000+ pieces with a colour matching fee. Black is the most UV-resistant colour and is recommended for outdoor applications. Colour samples can be provided upon request.Can plastic accessories be manufactured to custom dimensions?Yes. Custom injection moulding is available for plastic post caps, rail connectors, and decorative accessories. New mould tooling cost ranges from USD 300–1,500 depending on complexity. Prototype samples are produced within 15–20 days after mould approval. MOQ for custom plastic parts is typically 2,000–5,000 pieces.What is the operating temperature range for your plastic accessories?Our standard HDPE and PP accessories are rated for continuous use from -40°C to +80°C. Glass-filled nylon (PA66-GF30) components are rated from -40°C to +120°C, making them suitable for applications near heat sources. Please specify your climate conditions when ordering if temperatures exceed these ranges.What material and finish options are available for square post caps if we require steel instead of PP plastic?While the PFC-38x25 is primarily offered in durable PP plastic, we do provide custom manufacturing options for metal square post caps. These can be produced in galvanized steel for enhanced corrosion resistance or powder-coated steel to match specific fence colors. Please note that custom metal cap orders are subject to a higher minimum order quantity and may have longer lead times due to specialized fabrication processes.Can we request custom dimensions or add our company logo to the PFC-38x25 plastic fence post caps?Yes, we offer comprehensive OEM and ODM services for our plastic fence post caps. We can customize the dimensions to fit non-standard fence post sizes and emboss or deboss your company logo directly onto the cap surface. Custom tooling for unique designs or branding typically requires a one-time setup fee, with prototypes available for approval before mass production. Our engineering team can assist with design specifications to ensure a perfect fit and finish.Request a quote from HST