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Pulte Electric Technology (Wenzhou) Co., Ltd. Home / Product / Factory Direct / Plug

China Hole Plug Factory

Plastic Plug PET-PG-T

Plastic Plug PET-PG-T

● Material: UL approved PA66, butadiene rubber
● Thread specification: German thread (PG)
● Operating temperature: static -40°C to 100°C, instantaneous heat resistance to 120°C, dynamic -20°C to 80°C, instantaneous heat resistance to 100°C.
●  Features: Special clamping claw and rubber parts design, clamping range is large, strong tensile resistance, waterproof, dustproof, saltproof, acid and alkali resistance, alcohol, grease, and general solvents.
● Color type: Black, gray, special colors (white, red, blue, dark gray) can be customized.

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  • Plastic Plug PET-PG-T
Model Thread Size MM Thread pitch MM Hole size MM Threaded drill MM Thread length MM Applicable cable MM Wrench size MM Order number Packing quantity PCS
Models
PET-PG7T 12.5 1.27 12.6-13 11.2 8 12.5 15 P07L08T1 1000
PET-PG9T 15.2 1.41 15.3-15.7 13.8 8 3 19 PO9L08T1 1000
PET-PG11T 18.6 1.41 18.7-19.1 17.2 9 l3 22 P11L08T1 500
PET-PG13.5T 20.4 1.41 20.5-20.9 19 9 3 25 P13L09T1 200
PET-PG16T 22.5 1.588 22.6-23 21.1 10 15 27 P16L10T1 200
PET-PG19T 24 1.588 24.1-24.5 22.3 10 5 30 P19L10T1 200
PET-PG21T 28.3 1.588 28.4-28.8 26.7 10 15.5 33 P21L10T1 100
PET-PG25T 30 1.588 30.1-30.5 27.8 l1 6 38 P25L11T1 100
PET-PG29T 37 1.588 37.1-37.5 35.4 11 6 44 P29L11T1 50
PET-PG36T 47 1.588 47.1-47.5 45.5 13 18 55 P36L13T1 50
PET-PG42T 54 1.588 54.1-54.5 52.4 13 18.5 62 P42L13T1 50
PET-PG48T 59.3 1.588 59.4-59.8 57.7 14 19.5 68 P48L14T1 50
Plastic Plug PET-M-T

Plastic Plug PET-M-T

● Material: UL approved PA66, butadiene rubber
● Thread specification: Metric thread (M)
● Operating temperature: static -40°C to 100°C, instantaneous heat resistance to 120°C, dynamic -20°C to 80°C, instantaneous heat resistance to 100°C.
●  Features: Special clamping claw and rubber parts design, clamping range is large, strong tensile resistance, waterproof, dustproof, saltproof, acid, and alkali resistance, alcohol, grease, and general solvents.
● Color type: Black, gray, special colors (white, red, blue, dark gray) can be customized.

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  • Plastic Plug PET-M-T
Model Thread Size MM Thread pitch MM Hole size MM Threaded drill MM Thread length MM Applicable cable MM Wrench size MM Order number Packing quantity PCS
Models
PET-M12T M12*1.5 1.5 12.1-12.5 10.3 8 13 15 M12L08T1 1000
PET-M16T M16*1.5 1.5 16.1-16.5 14.3 8 13 19 M16L08T1 1000
PET-M18T M18*1.5 1.5 18.1-18.5 16.3 8 13 22 M18L08T1 500
PET-M20T M20*1.5 1.5 20.1-20.5 18.3 9 13 25 M2OL09T1 200
PET-M22T M22*1.5 1.5 22.1-22.5 20.3 10 15 27 M22L10T1 200
PET-M24T M24*1.5 1.5 24.1-24.5 22.3 10 15 27 M24L10T1 200
PET-M25T M25*1.5 1.5 25.1-25.5 23.3 10 15.5 30 M25L10T1 100
PET-M27T M27*1.5 1.5 27.1-27.5 25.3 10 15.5 30 M27L10T1 100
PET-M3OT M30*1.5 1.5 30.1-30.5 27.8 11 16 33 M30L11T1 100
PET-M32T M32*1.5 1.5 32.1-32.5 30.3 11 16 38 M32L11T1 100
PET-M36T M36*1.5 1.5 36.1-36.5 33.8 12 18 44 M36L12T1 50
PET-M40T M40*1.5 1.5 40.1-40.5 38.3 14 18 46 M40L14T1 50
PET-M50T M50*1.5 1.5 50.1-50.5 48.3 14 18 56 M50L14T1 50
PET-M63T M63*1.5 1.5 63.1-63.5 61.3 14 19 68 M63L14T1 50
Metal Plug (Nickel-Plated Brass) PET-PG-T

Metal Plug (Nickel-Plated Brass) PET-PG-T

● Material: The main part is nickel-plated brass, the clamp is UL-approved nylon PA, and the seal is made of nitrile butadiene rubber (NBR), and Epdm rubber (EPDM).
● Thread specification: German thread (PG)
● Operating temperature: static -40°C to 100°C, instantaneous heat resistance to 120°C, dynamic -20°C to 80°C, instantaneous heat resistance to 100°C.
● Waterproof class IP68 (using O-seals)

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  • Metal Plug (Nickel-Plated Brass) PET-PG-T
Model Thread Size MM Thread pitch MM Hole size MM Threaded drill MM Thread length MM Applicable cable MM Cap Size
(D1) (mm)		 Wrench Size
(D1) (mm)		 Order number Packing quantity PCS
Models
PET-PG7T 12.5 1.27 12.6-13 11.2 5 8 14 14 CPO7L05T01
CPO7L05T06		 100
PET-PG9T 15.2 1.41 15.3-15.7 13.8 6 9 17 17 CPO9L06T01
CPO9L06T06		 100
PET-PG11T 18.6 1.41 18.7-19.1 17.2 6 9 21 20 CP11L06T01
CP11L06T06		 100
PET-PG13.5T 20.4 1.41 20.5-20.9 19 7 10 23 22 CP13L07T01
CP13L07T06		 100
PET-PG16T 22.5 1.588 22.6-23 21.1 7 10 25 24 CP16L07T01
CP16L07T06		 100
PET-PG21T 28.3 1.588 28.4-28.8 26.7 7 11 31 30 CP21L07T01
CP21L07T06		 50
PET-PG29T 37 1.588 37.1-37.5 35.4 8 12 40 40 CP29L08T01
CP29L08T06		 50
PET-PG36T 47 1.588 47.1-47.5 45.5 9 15 50 50 CP36L09T01
CP36L09T06		 25
PET-PG42T 54 1.588 54.1-54.5 52.4 10 15 57 60 CP42L10T01
CP42L10T06		 15
PET-PG48T 59.3 1.588 59.4-59.8 57.7 10 16 64 65 CP48L10TO1
CP48L10T01		 15
Metal Plug (Nickel-Plated Brass) PET-M-T

Metal Plug (Nickel-Plated Brass) PET-M-T

● Material: The main part is nickel-plated brass, the clamp is UL-approved nylon PA, and the seal is made of nitrile butadiene rubber (NBR), and Epdm rubber (EPDM).
● Thread specification: Metric thread (M)
● Operating temperature: static -40°C to 100°C, instantaneous heat resistance to 120°C, dynamic -20°C to 80°C, instantaneous heat resistance to 100°C.
● Waterproof class IP68 (using O-seals)

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  • Metal Plug (Nickel-Plated Brass) PET-M-T
Model Thread Size MM Thread pitch MM Hole size MM Threaded drill MM Thread length MM Applicable cable MM Cap Size
(D1) (mm)		 Wrench Size
(D1) (mm)		 Order number Packing quantity PCS
Models
PET-M10T M10*1.0 1 10.1-10.5 8.9 5 8 14 14 CM10L05T01
CM10L05T06		 100
PET-M12T M12*1.5 1.5 12.1-12.5 10.3 5 8 14 14 M12L05T01
M12L05T06		 100
PET-M16T M16*1.5 1.5 16.1-16.5 14.3 6 9 18 18 M16L06T01
M16L06T06		 100
PET-M18T M18*1.5 1.5 18.1-18.5 16.3 6 9 21 20 CM18L06T01
CM18L06T06		 100
PET-M20T M20*1.5 1.5 20.1-20.5 18.3 7 10 23 22 M20L07T01
M20L07T06		 100
PET-M22T M22*1.5 1.5 22.1-22.5 20.3 7 10 25 25 CM22L07T01
CM22L07T06		 100
PET-M24T M24*1.5 1.5 24.1-24.5 22.3 7 10 27 27 CM24L07T01
CM24L07T06		 100
PET-M25T M25*1.5 1.5 25.1-25.5 23.3 7 10 28 28 CM25L07T01
CM25L07T06		 100
PET-M27T M27*1.5 1.5 27.1-27.5 25.3 7 11 29.5 30 CM27L07T01
CM27L07T06		 50
PET-M3OT M30*1.5 1.5 30.1-30.5 27.8 7 11 32.5 34 CM30L07T01
CM30L07T06		 50
PET-M32T M32*1.5 1.5 32.1-32.5 30.3 8 12 35 36 CM32L08TO1
CM32L08T06		 50
PET-M36T M36*1.5 1.5 36.1-36.5 33.8 8 12 38.5 40 CM36L08T01
CM36L08T06		 50
PET-M40T M40*1.5 1.5 40.1-40.5 38.3 9 15 44 45 CM4OL09T01
CM4OL09T06		 25
PET-M50T M50*1.5 1.5 50.1-50.5 48.3 9 15 54 55 CM50L09TO1
CM50L09T06		 25
PFT-M63T M63*1.5 1.5 63.1-63.5 61.3 10 16 67 70 CM63L10T01
CM63L10T06		 15
Plastic Clasp Plug PET-HP

Plastic Clasp Plug PET-HP

● Product Material: Made of UL-approved nylon PA material, fire rating 94V-2, acid, alkali, oil resistant, the top is a round hood, fixed tooth hook 3.2mm thickness below the plate can be applied. Good insulation and durability are not easy to age.
● Usage: Gently plug the buckle plug head into the hole of the machine plate, and you can firmly lock the machine plate.
● Product use: as a reserve hole or excess hole plug flat, to maintain the appearance of the disk.

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  • Plastic Clasp Plug PET-HP
Models Caliber of machine plate Dimension Colour Order number Packing quantity PCS
(mm) A Cap size B Thread height H
PET-HP-φ08 7.8 7.8 9.5 7.7 Black light gray silver gray white HP08T 100
PET-HP-φ09 9.5 9.4 12 10.2 HP09T 100
PET-HP-φ13 12.7 12.5 14.6 10.2 HP13T 100
PET-HP-φ16 16 15.7 18.7 10.2 HP16T 100
PET-HP-φ19 19 18.8 23.2 10.2 HP19T 100
PET-HP-中22 22 22 25.3 11.2 HP22T 100
PET-HP-φ25 25.4 25 28 11.2 HP25T 100
PET-HP-φ32 30.5 30.1 34.2 11.2 HP32T 100
Plastic buckle type coring ring PET-KH/KC

Plastic buckle type coring ring PET-KH/KC

● Product Material: Made of UL-approved nylon PA material, fire rating 94V-2, acid, alkali, oil resistant, the top is a round hood, fixed tooth hook 3.2mm thickness below the plate can be applied. Good insulation and durability are not easy to age.
● Usage: Gently plug the buckle plug head into the hole of the machine plate, and you can firmly lock the machine plate.
● Product use: Protect the wire from wear and insulation, and the general power cord is fixed.

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  • Plastic buckle type coring ring PET-KH/KC
Models Caliber of machine plate Dimension Order number Packing quantity PCS
(mm) A Cap size B Bore C Thread height H
Conventional type PET-KH-0508 7.8 7.7 9.4 5.2 7.8 KH0508 100&1000
PET-KH-0609 9.5 9.5 12 6.9 10.1 KH0609
PET-KH-0811 11 10.9 13.7 8.3 10.3 KH0811
PET-KH-0813 16 12.6 15.1 8.3 10.3 KH0813
PET-KH-1216 12.7 15.8 18 12.3 10.4 KH1216
PET-KH-1419 19 19 21.8 14.3 11.3 KH1419
PET-KH-1722 22.2 21.9 25.1 18.6 11.2 KH1722
PET-KH-1925 25.5 25 28 19.3 11.2 KH1925
PET-KH-2430 30.5 29.8 34 24.3 11.6 KH2430
Open-
mouthed
pattern		 PET-KC-0813 12.7 12.7 14.1 8.7 10.1 HC0813 100
PET-KC-1216 16 15.9 17.7 12.3 10.1 HC1216
PET-KC-1419 19 19 20.3 14.2 10.3 HC1419
PET-KC-1722 22.2 22.2 23.5 17.5 10.3 HC1722
About Us
Pulte Electric Technology (Wenzhou) Co., Ltd.
Pulte Electric Technology (Wenzhou) Co., Ltd. is a China Custom Plug Manufacturer and Sale Plug Factory specializing in producing cable connectors, waterproof junction boxes, and other electrical product accessories. The company was born in the electrical town known as the "China Electrical Capital". It is a professional modern enterprise integrating R&D, production, and sales. Focusing on the brand building of Pulte "PULTE", with excellent technical crispness and efficient quality assurance, satisfactory and thoughtful sales service, and reasonable and affordable prices, its various technical indicators and product performance are better than its peers, and are widely used in junction boxes, distribution cabinets, communication equipment, instruments, and meters, medical equipment, machine tools, artificial intelligence, automation equipment, and other fields: constantly innovating, developing new products, forming a series of waterproof cable connectors, waterproof junction boxes, cold blocking parts, cable connector accessories, hose waterproof connectors and other products. At the same time, Wenzhou Pulte International Trade Co., Ltd., a subsidiary of the company, actively expands the international market and is committed to providing high-quality products and services to global customers, effectively broadening the company's market channels, enhancing market competitiveness, and laying the foundation for expanding the scale of the enterprise. The company has strong technical strength and is jointly established by industry veterans. It has a professional position in the field of cable connector manufacturing. We have a complete quality assurance system and rich design and manufacturing experience. Our products are widely used in various industries and are highly reliable. We provide professional and high-quality cable-supporting products for customers. We believe that there is a product that meets your needs in our complete series of products.
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Industry Knowledge Extension

How are Hole Plugs Installed? A Guide to Simple yet Secure Sealing

The installation of hole plugs, while seemingly straightforward, is a critical process that ensures a secure, reliable, and often permanent seal. The method varies significantly depending on the plug type, the material of the host part, and the intended function (e.g., aesthetic cover versus high-pressure seal). Understanding the correct installation technique is paramount to achieving the desired result. The process can be broken down into three key methodologies.

Press-Fit Installation (The Common Method)

This is the standard method for push-in plastic and rubber plugs, such as those used to cover unused screw holes in consumer products or panels. The plug is designed with an outer diameter slightly larger than the hole's inner diameter. This creates an interference fit. To install, the plug is simply aligned with the hole and pressed firmly into place by hand, with a mallet, or using an automated press. The plug’s flexibility, often aided by ribs, fins, or a tapered design, allows it to compress slightly upon insertion. Once seated, the plug expands back, gripping the hole’s walls tightly through friction and elastic recovery. This method is prized for its speed and tool-less simplicity, requiring no additional components like screws or adhesives.

Threaded and Twist-Lock Installation

For applications requiring a more robust, reusable, or vibration-resistant seal, threaded plugs are the solution. This category includes metal and plastic screw hole plugs. Installation involves aligning the plug’s external threads with the internal threads of the tapped host hole. The plug is then rotated clockwise, typically by hand or with a driver (screwdriver, hex key, or socket wrench), until it is fully seated and hand-tight. Some advanced plastic designs, like quarter-turn or bayonet-style plugs, involve aligning lugs and giving a short twist to lock them securely under a flange. This method provides a mechanically strong connection that can withstand significant internal or external pressure and can be easily removed for access without damaging the plug or the host material.

What are the Main Production Steps of Plastic Screw Hole Plugs?

The manufacturing of plastic screw hole plugs is a precise engineering process, primarily utilizing injection molding to create high-volume, consistent, and cost-effective parts. This process transforms raw plastic resin into a finished, functional component through a series of controlled steps.

Step 1: Material Preparation and Mold Clamping

The process begins with the selection of the appropriate thermoplastic material, such as Nylon, Polypropylene, or ABS, based on the required properties like chemical resistance, temperature tolerance, and flexibility. This raw material is supplied in the form of small pellets. These pellets are fed from a hopper into the barrel of the injection molding machine, where they are heated and compressed by a reciprocating screw until they melt into a viscous liquid. Simultaneously, the two halves of a custom-made, precision-machined steel mold are hydraulically clamped together under high pressure to withstand the immense force of the incoming molten plastic.

Step 2: Injection, Cooling, and Ejection

The molten plastic is now injected at high speed and pressure into the sealed mold cavity through a sprue and runner system. The cavity is a negative impression of the final plug, including all its features—external threads, drive style (e.g., Phillips, hex), sealing ribs, and branding. Once the cavity is filled, pressure is maintained momentarily in a phase called “holding” to pack more material in and prevent shrinkage and sink marks. The material is then allowed to cool and solidify inside the water-cooled mold. After the designated cooling time, the mold opens, and ejector pins push the finished plug, along with its attached runner system, out of the mold. The parts are then separated from the runner (which is often reground and recycled), inspected for quality, and packaged for shipment.

What is the Purpose of Metal Sealing Plugs?

Metal sealing plugs are engineered components designed for demanding industrial applications where plastic plugs would be insufficient. They provide robust, reliable, and long-lasting solutions for sealing access and inspection ports, test points, and fluid systems. Their purposes extend far beyond simple hole covering, serving critical functional and safety roles.

1. Pressure and Fluid Containment

The primary purpose of many metal plugs, especially pipe plugs and expansion plugs, is to create a hermetic seal capable of withstanding internal pressures and temperatures. They are used to permanently or semi-permanently seal off ports in hydraulic systems, engine blocks, oil galleries, and compressed air or fluid pipelines. Made from metals like brass, stainless steel, or carbon steel, and often paired with a sealing thread tape or compound, these plugs prevent dangerous and costly leaks of liquids or gases, ensuring system integrity and operational safety under conditions that would compromise plastic alternatives.

2. Environmental Protection and Contamination Prevention

Metal plugs act as a formidable barrier against harsh external environments. They seal openings to prevent the ingress of contaminants such as dirt, dust, moisture, and chemicals into sensitive machinery or electronic assemblies. For example, a threaded stainless steel plug in a marine application protects internal components from corrosive saltwater. In the food, pharmaceutical, and chemical processing industries, specific grades of stainless steel plugs are used because they are non-porous, easy to sterilize, and resistant to corrosive cleaning agents, thus preventing product contamination and ensuring compliance with strict hygiene standards.