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Vacuum-Tubing.com — Industrial Vacuum Tubing, Pipe, Fittings, Couplings & Pneumatic Conveying Components Vacuum-Tubing.com — Industrial Vacuum Components | 866-973-7003 | Request a Quote
2-Bolt, 3-Bolt, 4-Bolt, and 5-Bolt Couplings to meet all your coupling needs.

Industrial Compression Couplings for Vacuum Tubing & Pneumatic Conveying

Morris Type Compression Couplings available in galvanized or stainless steel. Compression couplings are available in a variety of gasket configurations.

Compression Couplings | Morris Type Compression Couplings | Instalok™ Compression Couplings

Morris Type Compression Couplings

Morris-style bolted compression couplings are used for vacuum tubing and heavy-wall pipe applications where a reusable mechanical connection is required.

Bolted couplings are available in multiple sizes and bolt configurations to accommodate heavier-wall installations. Galvanized steel with plated hardware is standard, with stainless steel versions available for applicable sizes.

Standard Features

  • Standard black neoprene gasket
  • Stainless steel grounding strip
  • Galvanized steel construction
  • Plated hardware
  • Stainless steel versions available
  • Multiple gasket materials available

Inquire for actual part numbers and availability.

Available Gasket Materials

  • Black Neoprene
  • White Nitrile
  • Red Rubber
  • Silicone
  • EPDM
  • Viton
  • Food Grade

Additional sizes and custom configurations are available upon request.

Installation & Construction

  • Installs with a 3/4″ wrench or deep socket
  • Reusable mechanical connection
  • Available in 3-, 4-, 5-, and 6+ bolt configurations
  • Designed for tubing and heavy-wall pipe applications
  • Galvanized with plated hardware standard
  • Stainless steel versions available

Morris-style bolted compression couplings are commonly selected where a reusable mechanical connection, broad size range, and multiple gasket options are required.

Morris Type Sizes & Part Numbers

Common Name Part No. for O.D. Tubing Part No. for I.D. Pipe Pipe O.D.
1 1/2 A 15 B 150 1.90
1 3/4 A175 — —
2 A 2 B 200 2 3/8
2 1/8 A2125 — —
2 1/2 A 25 B 25 2 7/8
3 A 3 B 3 3 1/2
3 1/2 A 35 B 35 4
4 A 4 B 4 4 1/2
4 1/2 A45 — —
5 A 5 B 5 5.563
6 A 6 B 6 6 5/8
8 A 8 B 8 8 5/8
10 A 10 B 10 10 3/4
12 A 12 B 12 12 3/4
14 A 14 B 14 14
Instalok quick connect compression coupling for industrial vacuum tubing and pneumatic conveying systems

Instalok™ Compression Coupling
Standard black nitrile O-ring shown. Additional O-ring materials are available upon request.

Instalok™ Compression Couplings

Available O-Ring Materials

  • Black Nitrile
  • Additional O-ring materials available upon request

Additional sizes and configurations are available upon request.

Sizes & Applications

  • Available for industrial vacuum tubing applications
  • Available for applicable heavy-wall pipe sizes
  • Commonly used in pneumatic conveying systems
  • Suitable for plastic pellet and dry material conveying applications
  • Designed for straight-end tubing and pipe connections
  • Galvanized steel construction only for this coupling style

Instalok™ couplings are commonly selected where installation speed, ease of removal, and a reusable mechanical connection are important.

Before ordering: confirm tubing O.D., pipe size, O-ring material, and application requirements.

Instalok™ Sizes & Part Numbers

Common Name
(Tubing O.D.)
Coupling Length Part No. for O.D. Tubing Part No. for I.D. Pipe Pipe O.D.
1 1/2 4 CP15062B-16Z NA 1.90
1 3/4 4 CP17562B-16Z NA —
2 4 CP20042-16Z NA 2 3/8
2 1/8 4 CP21262B-16Z NA —
2 1/4 4 CP22542-16Z NA —
2 1/2 4 CP25062B-16Z NA 2 7/8
3 4 CP30042-16Z CP35062B-16Z 3 1/2
3 1/2 4 CP35062B-16Z CP40042-16Z 4
4 4 CP40042-16Z NA 4 1/2
1 1/2 6 CP15062B-16Z NA 1.90
1 3/4 6 CP17562B-16Z NA —
2 6 CP20062-16Z NA 2 3/8
2 1/8 6 CP21262B-16Z NA —
2 1/4 6 CP22562-16Z NA —
2 1/2 6 CP25062B-16Z NA 2 7/8
3 6 CP30062-16Z CP35062B-16Z 3 1/2
3 1/2 6 CP35062B-16Z CP40062-16Z 4
4 6 CP40062-16Z NA 4 1/2
2 1/2 8 CP25082B-16Z NA 2 7/8
3 8 CP30082B-16Z CP35082B-16Z 3 1/2
3 1/2 8 CP35082B-16Z CP40082B-16Z 4
4 8 CP40082B-16Z NA 4 1/2

Quick / Super Grip Coupling
Stainless steel coupling shown. Gasket material and coupling length vary by size and application.

Quick / Super Grip Couplings

Quick / Super Grip couplings provide a fast, reusable connection for straight-end vacuum tubing and pipe where frequent access, cleaning, or disassembly may be required.

These couplings are commonly used in industrial vacuum and pneumatic conveying systems where operators need a secure mechanical connection that can be opened and reassembled quickly.

Standard Features

  • Stainless steel construction
  • Reusable mechanical connection
  • Designed for quick installation and removal
  • Suitable for straight-end tubing and pipe connections
  • Available in multiple coupling lengths
  • Multiple gasket materials available

Inquire for actual part numbers and availability.

Available Gasket Materials

  • Black Neoprene
  • White Nitrile
  • Red Rubber
  • Silicone
  • EPDM
  • Viton
  • Food Grade options available for applicable sizes


Additional sizes and gasket configurations are available upon request.

Sizes & Applications

  • Used on straight-end tubing and pipe connections
  • Suitable for industrial vacuum systems
  • Suitable for pneumatic conveying applications
  • Useful where frequent line access or cleaning is required
  • Available in multiple coupling lengths
  • Commonly used in bulk material handling systems

Quick / Super Grip couplings are commonly selected where fast access, repeated disassembly, and a reusable stainless steel connection are important.

Before ordering: confirm tubing O.D. or pipe size, coupling length, gasket material, and application requirements.

Quick Coupling Sizes & Part Numbers

Common Name Tube/Pipe Size Part No. for O.D. Tubing Part No. for I.D. Pipe Pipe O.D.
4" LONG COUPLINGS, 1 CLAMP (FOR FDA ADD -FDA TO END OF PART NUMBER)
1 1/4—SG-166011.656
1 1/2SG-15501SG-190011.90
1 3/4SG-17501——
2SG-20001SG-237512 3/8
2 1/8SG-21251——
2 1/2SG-25001SG-287512 7/8
3SG-30001SG-350013 1/2
3 1/2SG-35001SG-400014
4SG-40001SG-450014 1/2
4 1/2SG-45001——
5SG-50001SG-556315.563
6SG-60001SG-662516 5/8
8SG-80001SG-862518 5/8
10SG-10001SG-10750110 3/4
12SG-120001SG-12750112 3/4
9-1/2" LONG COUPLINGS, 2 CLAMPS (FOR FDA ADD -FDA TO END OF PART NUMBER)
1 1/4——1.656
1 1/2——1.900
1 3/4———
2——2 3/8
2 1/8———
2 1/2——2 7/8
3——3 1/2
3 1/2—SG-400024
4SG-40002SG-450024 1/2
4 1/2SG-45002——
5SG-50002—5.563
6SG-60002SG-662526 5/8
8SG-80002SG-862528 5/8
10SG-10002SG-10750210 3/4
12SG-120002SG-12750212 3/4
Heat shrink sleeve for sealing industrial vacuum tubing and pneumatic conveying systems

Shrink Sleeve Connection
Heat-shrink sleeve shown for use with compatible expanded-end light-wall tubing fittings.

Shrink Sleeves for Light-Wall Tubing Systems

Shrink sleeves provide a simple sealing method for light-wall vacuum tubing and pneumatic conveying systems. The sleeve is positioned over the joint and heated until it contracts tightly around the connection.

Shrink sleeves are typically used with expanded-end fittings where a lightweight, low-profile connection is preferred.

Standard Features

  • Heat-shrinkable polyolefin construction
  • Lightweight connection method
  • Designed for light-wall tubing systems
  • Low-profile finished joint
  • Suitable for expanded-end fittings
  • Available in multiple tubing sizes

Inquire for actual part numbers and availability.

Recommended Applications

  • Industrial vacuum tubing systems
  • Pneumatic conveying systems
  • Light-wall tubing installations
  • Expanded-end fitting connections
  • Applications where a compact connection is preferred

Shrink sleeves are commonly selected where a simple, lightweight connection is required on compatible light-wall tubing systems.

Before ordering: confirm tubing O.D., fitting end configuration, sleeve size, and application requirements.

Shrink Sleeve Sizes & Part Numbers

Part Number Shrink Sleeve For O.D. Tubing
SS-1501 1/2
SS-2122, 2 1/8
SS-3002 1/2, 3
SS-3503 1/2
SS-4004
SS-5005
SS-6006
SS-8008
SS-100010
SS-120012
SS-140014
Slip coupling for industrial vacuum tubing and pneumatic conveying systems

Slip Coupling Solid sleeve coupling shown for joining straight tubing or pipe ends.

Slip Couplings for Light-Wall Tubing Systems

Slip couplings are solid sleeves used to join two straight tubing or pipe ends in industrial vacuum and pneumatic conveying systems.

Depending on the application, slip couplings can be welded, brazed, or used with shrink sleeves to create a secure connection between straight sections.

Standard Features

  • Solid sleeve construction
  • Designed for joining straight tubing or pipe ends
  • Suitable for light-wall tubing systems
  • Can be welded or brazed where applicable
  • Can be used with shrink sleeves
  • Available in multiple sizes and materials

Inquire for actual part numbers and availability.

Available Materials

  • Carbon Steel
  • Galvanized Steel
  • Aluminum 6061
  • 304 Stainless Steel

Additional sizes and configurations are available upon request.

Sizes & Applications

  • Industrial vacuum tubing systems
  • Pneumatic conveying systems
  • Light-wall tubing installations
  • Straight-end tube or pipe connections
  • Applications requiring welded or brazed joints
  • Applications using shrink sleeves as the sealing method

Slip couplings are commonly selected where two straight tubing or pipe ends must be joined without a bolted compression coupling.

When shrink sleeves are used as the sealing method, two shrink sleeves are required for each slip coupling joint.

Before ordering: confirm tubing O.D. or pipe size, material, connection method, and application requirements.

Slip Coupling Sizes & Part Numbers

Size E – I.D. C Gauge
SC-153 1 1/2 3 16
SC-203 2 3 16
SC-213 2.12 3 16
SC-253 2 1/2 3 1/2 16
SC-303 3 4 16
SC-353 3 1/2 4 1/2 16
SC-403 4 5 16
SC-503 5 6 14
SC-603 6 7 14
SC-803 8 8 14
SC-1003 10 10 12
SC-1203 12 12 12
SC-1403 14 14 12