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Waterproof PMMA Tube for Pressure Cabin - 5mm Wall, 60-160mm OD
Waterproof PMMA Tube for Pressure Cabin - 5mm Wall, 60-160mm OD

Waterproof PMMA Tube for Pressure Cabin - 5mm Wall, 60-160mm OD

Out Diameter
Length
$12.99 USD
In stock
Customization Service

We are the OEM ODM manufacturer. For bulk orders and custom solutions, please contact us at official@hobbywater.com
When will I get my order?

We prioritize fast order processing. For in-stock items, orders placed before 4:00 PM (Beijing Time) will be shipped the same day. Standard orders typically ship within one week, while customized orders require approximately 15-30 business days for production and delivery. Delivery times may vary under special circumstances.
Shipping Methods

We ship to most countries worldwide. However, please ensure compliance with your local import regulations.

  • For the USA: We offer tax-inclusive shipping options. Expedited orders are shipped via DHL, UPS, or FedEx. Note: DHL does not allow undervaluation.
  • For other countries: Tax-inclusive shipping is available upon request. Otherwise, orders will be shipped via 4PX by default.

For specific shipping requirements, please contact us in advance.

Waterproof PMMA Tube / Pipe – for Pressure Cabin Components

Professional Acrylic Tubing for Underwater Applications

This acrylic tube is specifically designed for pressure cabin and submersible housing applications. Manufactured with professional cutting technology and finished with annealing and stress testing, it delivers clean, flat cuts and reliable performance under pressure.

Note: The picture shows the acrylic tube only, not a complete kit.

Key Features

  • 🔬 Professional Annealing Process – Reduces internal stress, prevents cracking and deformation

  • ✂️ Clean & Flat Cut – Precision cutting technology leaves no residual debris

  • 💧 Underwater Pressure Ready – Stress-tested for improved sealing performance

  • 🛡️ High-Quality PMMA – Transparent, durable, and waterproof acrylic material

  • 📏 Multiple Size Options – Various outer diameters and lengths available

Specifications



Parameter Details
Material PMMA (Acrylic)
Wall Thickness 5mm
Outer Diameter Options 60mm / 90mm / 110mm / 130mm / 160mm
Length Options 200mm / 250mm / 300mm / 400mm / 500mm
Process Annealed + Stress Tested
Application Underwater pressure cabins, submersible housings

Why Choose This PMMA Tube?

✅ Stress-Relieved – Annealing process ensures dimensional stability
✅ Tested for Reliability – Stress-tested before delivery
✅ Ready to Use – Clean, flat cuts with no additional finishing required
✅ Customizable Options – Choose from multiple diameters and lengths

Package Includes

  • 1 × PMMA Tube (selected size: __ mm OD × __ mm length)
What are the different part configurations for the chamber assembly, and do they need grease?

Option 1 – One dome + one end cap (assembled):

  • 1x Hemisphere dome, 1x Chamber tube, 1x Flange, 1x End cap, 1x End cap retaining ring

Option 2 – One dome + one end cap (all separate parts):

  • 1x Single dome, 2x Flanges, 2x End cap retaining rings, 1x Chamber tube, 1x End cap

Both Option 1 and Option 2 require 1x Dow Corning grease.

Option 3 – Two end caps:

  • 1x Chamber tube, 2x Flanges, 2x End caps, 2x End cap retaining rings

Option 3 does NOT need grease.
End cap with retaining ring - combined assembly for sealing

When purchasing an acrylic end cap,
remember to also get the End Cover Retaining Ring

The combination ensures a proper seal for your chamber.
Shown above: End cap + Retaining Ring assembled together.

End Cap Retaining Ring Secure Seal

Sealed Chamber · Installation SOP

5-Step Standard Process
Installation reference diagram
Image unavailable. Please follow the text steps below.
Reference Diagram · Open Original · Click image to enlarge
1. Chamfer the Inner Edge FILE
Use a file to grind a 1–2 mm chamfer on the inner circumference of the acrylic tube.
Purpose: Enables smooth flange insertion and prevents damage to the sealing ring.
› Use a fine-tooth file. Apply even pressure to achieve a smooth, burr-free surface.
2. Apply Lubricant LUBRICATE
Evenly coat the entire sealing ring with sealing ring lubricant.
Purpose: Ensure full coverage and remove all dust or particles to maintain seal integrity.
› Clean the sealing ring with a lint-free cloth before application. Apply a thin, even layer only.
3. Install Cover & Pressure Plate ASSEMBLE
Place the sealing ring, then put on the chamber cover. Install the pressure plate on top.
Purpose: Ensures optimal sealing and extends the service life of the cover.
› Tighten pressure plate screws in a diagonal pattern to distribute pressure evenly.
4. Secure Feed-Through Screws FASTEN
Screw in the feed-through screws. Thread-locking adhesive is recommended to prevent loosening.
Purpose: Prevents screws from loosening due to vibration or long-term use.
› Use medium-strength thread locker (e.g., Loctite 243). Apply to 2–3 threads per screw.
5. Press Fit the Sealing Ring FINAL
Fit the sealing ring and press it evenly into the acrylic tube until fully seated.
Purpose: Ensures the sealing ring is fully seated, creating a reliable seal.
› Use a pressing tool or a soft-faced mallet if needed. Never use metal tools directly on the tube wall.
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Final Installation Checklist

  • Sealing ring seated evenly with no twisting
  • Lubricant applied uniformly, free of particles
  • Cover and pressure plate secured without play
  • Feed-through screws treated with thread locker
  • Sealing ring fully pressed into acrylic tube