DIN906 Tapered Pipe Plug Specifications
Parameter | Details |
Product Name | DIN906 Tapered External Thread Pipe Plug, Hexagon Socket Self-sealing Plug |
Standard | German Industrial Standard DIN906 |
Structure | Tapered External Thread + Recessed Hexagon Socket, Integrated Forming, No Seal Groove |
Material | 45# Carbon Steel, 304 Stainless Steel |
Surface Treatment | Black Oxide, Electro-galvanized, Stainless Steel Passivation |
Thread Type | Metric Tapered Thread, NPT/PT Taper Pipe Thread |
Size Range | Metric M6-M42, 1/4" 3/8" 1/2" NPT/PT In Stock |
Features | Self-sealing, Flush Mounted, No External Protrusion, No Fluid Dead Angle, Leak-proof |
Application | Hydraulic Manifold, Mold Oil Circuit, Gearbox, Mechanical Fluid Channel Sealing |
Inspection | Thread Gauge Test, Dimensional Calibration, Appearance Inspection, Sealing Sampling Test |
Package | Neutral Packaging + Export Carton & Pallet, OEM Custom Available |
Lead Time | 3-7 Days for Stock Items, 15-20 Days for Custom Products |
Product Core Advantages
Tapered Thread Self-sealing Structure
DIN906 pipe plug adopts precise tapered external thread design. The thread fits tightly during tightening and realizes stable static sealing by taper deformation without auxiliary sealing rings. It maintains stable performance under normal hydraulic pressure fluctuation and effectively prevents fluid leakage, suitable for long-term continuous mechanical operation.
Recessed Hexagon Flush Installation
The recessed hexagon socket design achieves embedded flush installation without external protrusion. It avoids structural interference with surrounding pipelines and valve bodies, perfectly adapting to dense hole layout of hydraulic manifolds and compact mold oil circuits, solving the installation limitation of traditional outer hex plugs.
Smooth End Face Ensures Fluid Cleanliness
The finely polished sealing end face leaves no dead angle after installation, reducing impurity accumulation and fluid turbulence. It effectively keeps the internal oil circuit clean, reduces equipment failure rate, and meets the precision operation standards of high-end hydraulic and mold equipment.
Multi-material for Full Scenario Application
Multiple materials and surface treatments cover diverse working conditions. Black oxide carbon steel is cost-effective for general industrial use; galvanized version improves moisture and rust resistance; 304 stainless steel provides excellent corrosion resistance for outdoor and harsh environments.
Material & Grade Selection
Black Oxide Carbon Steel Plug (General Industrial Grade)
Made of high-quality 45# carbon steel with black oxide anti-rust treatment. It features high hardness, uniform wear resistance and standard thread accuracy. With high cost performance, it is the preferred choice for conventional hydraulic valves, machine tools and mold oil circuit sealing, suitable for mass engineering supporting and equipment maintenance.
Electro-galvanized Carbon Steel Plug (Moisture-proof Upgrade Grade)
The uniform galvanized layer isolates air and moisture to prevent thread oxidation and jamming. It is widely used in humid workshops and semi-outdoor static equipment, facilitating later disassembly and maintenance and extending service life.
304 Stainless Steel Plug (High-end Corrosion-resistant Grade)
Premium 304 austenitic stainless steel has excellent oxidation, acid and salt spray resistance. It stably adapts to outdoor construction machinery, water treatment equipment and coastal humid environments, maintaining permanent sealing performance without rusting or jamming.
DIN906 VS DIN908 Difference
DIN906 Tapered Pipe Plug：No sealing groove, self-sealing tapered thread, recessed hexagon flush mounting. Compact and neat, mainly used for internal hidden oil circuits and dense hole positions, suitable for long-term fixed sealing scenarios.
DIN908 External Thread Plug：Equipped with sealing groove for auxiliary sealing with O-rings or gaskets. Easy to disassemble and maintain, designed for external exposed oil ports and reusable sealing positions.
Production Process
High-quality Raw Material Selection: Adopt qualified carbon steel and stainless steel rods to ensure stable material performance and consistent product quality.
CNC Integrated Precision Turning: One-piece forming for tapered thread, hexagon socket and sealing end face to ensure high dimensional accuracy and concentricity.
Precision Thread Rolling: Standard thread profile with full gauge inspection to ensure smooth fitting and tight meshing.
Full Deburring & Polishing: Eliminate sharp edges and residual burrs to avoid installation scratches and impurity residue.
Custom Anti-corrosion Treatment: Multiple surface processes meet different rust-proof and weather-resistant requirements.
Strict Batch Inspection: Sampling test on dimension, thread matching and sealing performance to guarantee stable batch quality.
Application Industries
Hydraulic Industry: Sealing and blocking for hydraulic manifolds, pump stations, oil cylinders and power units.
Mold Manufacturing: Cooling and lubricating channel sealing for plastic molds, die-casting molds and hardware molds.
Construction Machinery: Sealing for gearboxes, reducers and mechanical lubrication systems.
Automation Equipment: Process hole blocking for CNC machine tools and precision intelligent equipment.
General Machinery: Sealing of reserved holes for equipment shells, frames and boxes.
Outdoor Light Industry: Oil circuit protection for water treatment and garden machinery equipment.
Why Choose Our DIN906 Plugs
We specialize in the production of German-standard precision sealing fasteners, providing full-range DIN906 tapered external thread hexagon socket pipe plugs. Covering black oxide, galvanized carbon steel and 304 stainless steel series, all products strictly comply with DIN906 standards with accurate size and stable self-sealing performance. Suitable for precision machinery, hydraulic and mold equipment sealing, our products are leak-proof, durable and easy to install. Sufficient stock and customized processing provide reliable one-stop sealing solutions for global industrial buyers.
If you are looking for high-precision DIN906 tapered pipe plugs, carbon steel self-sealing oil plugs and 304 stainless steel hydraulic sealing plugs, feel free to contact us for professional technical support and accurate quotation.
