Mold for plastic plugs

Welcome to P&M , a specialized engineering and manufacturing partner focused on the design, tooling, and production of high-performance custom plastic plug molds and injection-molded components. We provide integrated manufacturing solutions from concept and mold design to high-volume production, rigorous testing, and full assembly. Unlike general-purpose molders, we possess deep expertise in producing plastic plugs that require exact tolerances, environmental sealing, and electrical safety. We are your technical partner in creating solutions that protect, connect, and perform in the most demanding applications.

1. Precision Mold Engineering for Complex Plug & Connector Geometries

Plugs are deceptively complex components. Their function—creating an environmental seal, maintaining electrical insulation, or providing a secure connection—demands absolute precision in mold design and fabrication. Our engineering approach is built on solving these critical challenges.

2. ADVANCED MOLD ARCHITECTURE FOR SEALING & CONNECTIVITY:

We design and build molds that produce flawless plug components, batch after batch.

Cavity & Core: Machined from high-performance mold steels (e.g., H13, Stainless 420) with hardness and corrosion resistance to withstand abrasive filled materials. We utilize 5-axis CNC and micro-EDM to achieve:

Precision Sealing Surfaces: Mirror-finish polished surfaces on critical sealing areas (e.g., O-ring grooves, tapered stems) to facilitate perfect sealing and easy insertion/removal.

Micro-Tolerances for Connectors: Ultra-precise pin bosses, socket housings, and locking features (e.g., threads, bayonet locks, snap-fits) to ensure seamless mating with corresponding parts.

Undercut Management for Strain Relief: Complex collapsible cores and hydraulic side-actions to form integrated strain reliefs and barbed endings for cables without parting lines.

Gating Technology: Gate location is critical to avoid weld lines on sealing surfaces and ensure structural integrity. We employ automated valve-gate hot runner systems to ensure balanced filling of multi-cavity molds, eliminate material waste, and provide a clean, cosmetically superior part gate.

Ejection System: Designed to protect delicate plug features. We use a combination of ejector sleeves, blades, and air poppets to ensure distortion-free ejection without marking critical sealing or cosmetic surfaces.

Cooling System: Utilizing Moldflow® analysis, we design optimized conformal cooling channels that follow the complex contours of the plug. This ensures uniform cooling, minimizes cycle times, and eliminates warpage and sink marks that could compromise sealing performance.

Vacuum Venting: Critical for plugs with deep, narrow cores for pins or sockets. We integrate dedicated vacuum systems to evacuate air completely, preventing burns, short shots, and voids that would cause electrical or sealing failure.

3. DESIGNED FOR HIGH-PERFORMANCE MATERIALS:

Our molds are crafted from steels and treated with coatings (e.g., DLC, Nickel-Plating) to withstand the high temperatures and abrasive nature of engineering thermoplastics and glass-filled compounds, ensuring long mold life and consistent part quality.

Material Selection for Reliability in Demanding Environments

The material choice is fundamental to a plug's function. We are experts in processing a wide range of engineered materials designed for specific electrical, chemical, and mechanical challenges.

Nylon (PA 6, PA 66, PA 46): Excellent balance of strength, toughness, and chemical resistance. Glass-filled grades (PA66+GF30) offer enhanced stiffness and heat resistance for electrical connectors. Ideal for: Automotive connectors, industrial cable plugs, and mechanical components.

Thermoplastic Polyurethane (TPU) & Thermoplastic Elastomers (TPE): Used for overmolding to create flexible, watertight seals, gaskets, and strain reliefs. Offers excellent weathering and tear resistance. Ideal for: Cable overmolds, waterproof connector seals, and protective caps.

Polypropylene (PP): Provides good chemical resistance and flexibility at a low cost. Ideal for: Non-critical protective caps, chemical container plugs, and consumer product covers.

We are plastic mold maker and can provide custom mold service, we can make injection molds, blow molds, rotational molds and die-casting molds.

For custom injection molds, we can provide professional custom injection molding services. Usually Plastic injection mold manufacturing Molding are manufactured using injection molding technology. The mold materials for injection molds can be chosen from P20, 718, S136, H13 and so on. The mold material reflects the mold life and product material requirements.

For parts that require blow molding production, we can also provide professional custom blow molding services.

Plastic injection mold manufacturing Injection Mould making

1.We communicate product design according to samples/drawings and your requirements.

2.After the product design is confirmed, we carry out the mold design, we provide all kinds of injection molds, blow molds, silicone molds, die-casting molds services.

3.Material procurement, steel cutting and mold basic tools.

4.Mold assembly

5.Mold inspection, tracking and controlling mold processing.

6. We will inform you the date of mold trial and send you the sample inspection report and injection parameters together with the sample.

7.Your instruction and confirmation of shipment.

8.Prepare the mold before packing.

Plastic injection mold manufacturing molding Specification

1. Professional manufacturer, design, production injection mould and stamping mould quality control

2. rich export experience plastic injection mould and stamping mould

3. Reasonable price of design mould

4. Cavities: single or as per your requirements cavity

5. Treatment: S45C Pretreat>25Hrc,And Nitriding

6. Mould Steel: Cavity ,Core and slide: P20 ,2738,2136 available Moldbase :LKM available

7. Standard:DEM ,HUSKY,available

8. Hot runner: according to your demand

9. Life time: >300 Thousand Times

10. Package: Plywood case, anti-rust paint

Mold design：

Information you need to provide us

1. If you have drawings, 2D drawings, 3D drawings (preferably in STEP format).

2. If there are no drawings, you need to provide specific length, width, height and weight information. (It’s best to send us samples)

3. Should the mold be sent to your country, or leave the mold in our factory and we will help you produce the product.

4. Mold material requirements, cavity number requirements (you can tell us about the size of your injection molding machine)

5. Product material requirements and product quantity. (You can tell us about the use of the product and we can give you suggestions)

Transaction process:

Mold testing：

Once the mold is complete, I do a mold test. It usually takes about 3-5 days to complete. We need to assemble the mold, adjust the pressure data of the machine, and try production. We need to check whether there are problems during the normal production of the mold and make modifications.

Product packaging

Packaging according to your needs

1.By air ,it takes 3-7 days for delivery .The goods can be shipped by DHL ,Fedex ,UPS .

2.By sea ,the delivery time is based on your port .

To South East Asian Countries takes about 5-12 days

To Middle east countries takes about 18-25 days

To European countries takes about 20-28 days

To American countries takes about 28-35 days

To Australia takes about 10-15 days

To African countries takes about 30-35 days.

Factory

Video-1: (Factory Video)

Video-2: (Injection Molding)

Video-3: (Blow molding)

Video-4: (Blow molding)

Video-5: (Roll molding)

Customer satisfaction is our most important goal. We focus on communication and cooperation with our customers, always pay attention to their needs and provide quick response and quality customer service. Our injection production mold factory is committed to establishing long-term relationships and ensuring that our customers receive the best after-sales service during the purchase and use of our products, and we will definitely do our best to solve any problems for our customers.

FAQ

1. Who are we?

We are based in Zhejiang, China, start from 2014,sell to North America(30.00%),Southern Europe(10.00%),Northern.

Europe(10.00%),Central America(10.00%),Western Europe(10.00%),Mid East(10.00%),Eastern Europe(10.00%),South America(10.00%). There are total about 51-100 people in our office.

2. How can we guarantee quality?

Always a pre-production sample before mass production;

Always final Inspection before shipment.

3. What can you buy from us?

Mould,Plastic Product, Metal Product,Dental Product,CNC machining.

4. Why should you buy from us not from other suppliers?

Ningbo P&M Plastic Metal Product Co., Ltd. We main do all kinds of 3d design, 3d printing and plastic metal molds tooling and products. We have our own engineer and factory. One-stop supply:3d design - 3d printing - mold making - plastic injection.

5. What services can we provide?

Accepted Delivery Terms: FOB,CFR,CIF,EXW,FCA,DDP,DDU;

Accepted Payment Currency:USD,EUR;

Accepted Payment Type: T/T,L/C,PayPal,Western Union,Escrow;

Language Spoken:English,Chinese,Spanish,French,Russian.

6. What are the characteristics of your service?

1. Your inquiry related to our products or prices will be replied within 24hours.

2. Welltrained and experienced staffs to answer all your enquiries in fluent English.

3. Offering the support to solve the problem in the application or selling period.

4. Competitive prices based on same quality.

5. Guarantee samples quality same as mass production quality.