Flat Top Square Tube Plastic End Cap for Fence Post PFC-50x5050mm flat top white PE square tube plastic end cap for fence posts. UV-resistant, weatherproof, clean white finish for aluminium and steel fence posts.MaterialPE (Polyethylene) / HDPEFinishWhite (UV-stabilized); custom colors availableMOQ1,000 pcsKey FeaturesUV-stabilized PE material prevents yellowing – maintains white color for yearsFlat top design provides clean, modern appearance for decorative fencingDesigned for 50x50mm square tubes – fits aluminium and steel fence postsWeatherproof seal protects tube interior from water, insects, and debrisEasy push-in installation – no tools or adhesive requiredSuitable for pool fencing, garden fencing, and decorative aluminium systemsAvailable in full size range from 25x25mm to 100x100mmCustom colors available for OEM/ODM ordersTechnical SpecificationsSpecificationValueItem No.PFC-50x50MaterialPE (Polyethylene) / HDPEColorWhite (UV-stabilized); Black, Grey, Custom colors availableTube Size50x50mm (also available: 25x25, 30x30, 50x50, 65x65, 75x75, 100x100mm)Top StyleFlat topTypeInternal insert (push-in type)UV ResistanceYes – UV-stabilized PE, anti-yellowingMOQ1,000 pcsPackaging500–1,000 pcs per cartonApplicationPool fence posts, aluminium fence posts, garden fence posts, decorative fencingProduct Description<p>The PFC-50x50 is a 50mm flat top white PE (polyethylene) square tube plastic end cap designed specifically for 50 x 50mm fence posts. Its clean white finish suits aluminium fence systems, white powder-coated steel fences, and decorative garden fencing where a neat appearance is important.</p> <p>Made from high-density polyethylene (HDPE/PE), this end cap provides strong UV resistance and weatherproofing compared with standard PP caps. The flat top design gives a sleek, modern appearance while sealing the tube end against moisture, insects, and debris.</p> <p>This cap is widely used in pool fencing, garden fencing, and decorative aluminium fence systems throughout Australia, New Zealand, and Europe. The UV-stabilized white colour is designed to resist yellowing over time. Custom colours and other sizes are available for OEM 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.Are these PE plastic end caps compatible with galvanized or powder-coated square steel tubes?Yes, our PFC-50x50 PE plastic end caps are designed with flexible internal ribs that ensure a secure, friction fit into square steel tubes, regardless of their surface finish. The resilient PE material and ribbed design accommodate minor dimensional variations commonly found in hot-dip galvanized, electro-zinc plated, or powder-coated steel profiles. This ensures a tight seal, protecting the tube interior from moisture and debris, thereby extending the lifespan of your fence or gate system.Do you offer OEM services to customize the dimensions or add branding to the PFC-50x50 plastic end caps?Yes, we provide comprehensive OEM and ODM services for our PE plastic end caps. We can customize the dimensions to fit non-standard square tube profiles 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