Compression Couplings
Compression Couplings with Advanced Eyelet Design

A reliable seal helps support system pressure, manage operating costs and reduce safety risks in demanding environments. Get high-quality compression couplings engineered specifically for industrial vacuum, dust collection and pneumatic conveying systems. Boss Process is your trusted source for compression couplings that deliver excellent conductivity, durable construction and strong sealing performance.
We provide couplings built for reliable performance, safety and efficiency in applications with higher static pressure requirements. Find high-performance couplings equipped with specialized designs and key features such as:
- Multifaceted protection: Our couplings are engineered to guard against tube separation and pressure leaks.
- Advanced conductivity: The proprietary "eyelet" design helps maintain reliable conductivity, reducing the risk of static electricity buildup in combustible dust environments.
- Cost-effective durability: These clean, snag-free tube joints support faster installation while helping to reduce overall component costs.
With static pressure ratings from 30 to 200 PSI, Boss Process industrial compression coupling solutions support diverse applications, including plastic resin conveying, bulk material handling and process system installations. Select a coupling built for your application’s pressure, material handling and installation requirements. The right coupling components can help protect system performance by improving pressure stability and reducing possible leaks while helping minimize setup time and component costs.
Static Seal 2 & 3 Bolt Stainless Steel Couplings
Originally engineered for plastic resin conveying, these stainless steel compression couplings support dilute-phase vacuum and pressure applications with static pressures up to 60 PSI. Their lightweight construction streamlines installation so your teams can complete setup efficiently without compromising grip strength. Designed for a secure, durable hold, this coupling type helps reduce the risk of tube separation.
Buy This ProductHL Series 3 & 4 Bolt Galvanized Steel Tube Couplings
Our flagship industrial compression coupling option, the HL Series, is purpose-built for use in positive-pressure and vacuum dilute- or dense-phase conveying systems. The galvanized steel tube coupling maintains static pressure ratings ranging from 30 PSI to 160 PSI.
Buy This Product
H Series Heavy Duty Tube and Pipe Couplings
The H Series compression couplings are designed for heavy-wall pipe and tube coupling applications with increased axial loads and tube separation concerns. Rated for up to 200 PSI static pressure, these couplings provide dependable stability while guarding against leaks. Our H Series compression couplings and FDA-compliant white NBR gasket options are available for projects with relevant sanitary requirements.
Buy This ProductSteady-Lok Assemblies
Steady-Lok Assemblies are for use in areas of high axial force where tube separation is a concern. They are used to secure the piping and maintain a leak tight seal to provide uninterrupted delivery of conveyed materials. Steady-Lok Assemblies are offered as an accessory item for 3 bolt (6” long) or 4 bolt (8” long) industrial compression couplings.
Buy This Product
Gasket Protectors
Boss Process Gasket Protectors are constructed from a thin layer of T304 stainless steel. These Gasket Protectors are uniquely designed to provide an extra layer of protection to guard against product contamination by constricting around the tube joint as the compression coupling is tightened in place. Boss Process does not recommend the use of Gasket Protectors on our 2 bolt product offerings.
Buy This Product