# PP Pneumatic Tube Plug Push-to-Connect Air Fitting End Cap

Date: 2026-07-12
Categories: Pneumatic Fittings
URL: https://homipneu.com/pp-pneumatic-tube-plug.html

## Product Summary

PP pneumatic fittings are **push-to-connect tube plugs (air pipe end caps)** designed for sealing unused pneumatic tubing and closing open ports in compressed air systems.

Unlike valves, PP fittings do not control airflow but are used to **block air lines, prevent leakage, and protect unused connections**.

With a simple push-in structure, they allow fast installation and removal without tools, making them ideal for maintenance, testing, and temporary sealing applications.

**OEM and ODM customization services are available** for tube size, material, color, and branding requirements.

### Specification Parameters

**Operating Fluid**
Air

**Type**
[Pneumatic Fittings](https://homipneu.com/tag/pneumatic-fittings)

**Proof Pressure**
1.32 MPa (13.5 kgf/cm²)

**Max. Operating Pressure**
0~0.9 MPa (0~9.2 kgf/cm²)

**Ambient & Fluid Temperature**
0~60°C

**Applicable Tubing**
[PU](https://homipneu.com/product/pneumatic-fittings/pu-pneumatic-straight-union.html) Tube, Nylon Tube

![PP pneumatic tube plug push to connect air pipe end cap](https://homipneu.com/wp-content/uploads/2026/04/20260429114149393210-800x440.webp)

**Model**
**A**
**B**
**ØC**

PP-4
30.5
16
4

PP-6
31.5
17
6

PP-8
33.5
18
8

PP-10
41.5
24
10

PP-12
43
25
12

### Color options available:

[![PP pneumatic tube plug push to connect air pipe end cap](https://homipneu.com/wp-content/uploads/2026/04/20260429114229201057.webp)](https://homipneu.com/wp-content/uploads/2026/04/20260429114229201057.webp)

[![PP pneumatic tube plug push to connect air pipe end cap](https://homipneu.com/wp-content/uploads/2026/05/20260502065932502873.webp)](https://homipneu.com/wp-content/uploads/2026/05/20260502065932502873.webp)

[![PP pneumatic tube plug push to connect air pipe end cap](https://homipneu.com/wp-content/uploads/2026/05/20260502065929870696.webp)](https://homipneu.com/wp-content/uploads/2026/05/20260502065929870696.webp)

![PP pneumatic tube plug push to connect air pipe end cap](https://homipneu.com/wp-content/uploads/2026/04/20260429114229201057.webp)

![PP pneumatic tube plug push to connect air pipe end cap](https://homipneu.com/wp-content/uploads/2026/05/20260502065932502873.webp)

![PP pneumatic tube plug push to connect air pipe end cap](https://homipneu.com/wp-content/uploads/2026/05/20260502065929870696.webp)

### Key Features

- Push-to-connect tube plug design

- Seals unused pneumatic tubing

- Prevents air leakage and pressure loss

- Suitable for PU and nylon tube

- Easy installation and removal

### Applications

- Pneumatic automation systems

- Air compressor pipelines

- Equipment maintenance and testing

- Temporary air line sealing

- Unused port protection

Widely used in pneumatic systems requiring **air sealing, pipeline isolation, and leak prevention**.

### Product Function

PP fittings are used to **close unused air tube ends or ports**, preventing air leakage and maintaining system pressure stability.

### Product Structure & Size Range

- PP4 / PP6 / PP8 / PP10 / PP12

- Tube sizes: 4mm → 12mm

- Push-in plug structure

- Compact sealing design

### Why Choose Our Pneumatic Fittings

- Professional **PP pneumatic plug manufacturer**

- OEM / ODM customization for **air tube plug projects**

- Reliable **pneumatic end cap for compressed air systems**

- High-quality **air fitting factory China with strict QC system**

- Durable **push-in tube plug for leak-proof sealing**

- Fast delivery and global B2B supply support

### FAQ

**Q1: What is a PP pneumatic fitting?**It is a push-to-connect tube plug used to seal pneumatic tubing or unused ports.

**Q2: Is PP a valve?**No, it is not a valve. It is a sealing plug and does not control airflow.

**Q3: What is a pneumatic tube plug used for?**It is used to block unused air lines and prevent leakage.

**Q4: What tubing is compatible with PP fittings?**It is suitable for PU tube and nylon tube.

**Q5: Can PP fittings be customized?**Yes, OEM/ODM customization is available for size, material, and structure.

### CTA

Looking for reliable pneumatic tube plugs for your system?Contact us now for **OEM/ODM solutions, bulk pricing, and fast delivery**.