1 - Advanced Engineering
2 - Wedge System
3 - Gripping Wedges
4 - Tri-Ply Seals
5 - Less Weight
GripSafe ST: Superior Technology, Engineered for Excellence
- Revolutionary, Patented Technology – Setting a New Benchmark After Six(+) Decades of Traditional Designs
- 21 Patents & 7 Trademarks – Protecting Innovation Across the U.S. & Global Markets
- 9 Years of R&D Excellence – Driven by an In-House Engineering Team with 67 Years of Combined Expertise
- 4,000+ Load & Pressure Tests – Rigorously Validated for Unmatched Performance & Reliability
- Proven in the Field – Delivering 8+ Years of Real-World Success
- GripSafe ST: The Future Industry Standard – Engineered with Confidence, Designed for Dominance
GripSafe ST: Intelligent Design for Maximum Hold & Performance
- Even Load Distribution – Ensures maximum surface contact and superior holding capacity
- Adapts to Any Pipe Shape – Effortlessly accommodates ovality and irregularities for a secure fit
- Self-Adjusting Wedges – Automatically conform to the pipe wall for a flawless grip
- Stronger Under Pressure – Increased pressure enhances grip strength for unmatched stability
- Damage Prevention – Eliminates harmful pressure points to protect pipe integrity
- Smart Auto-Grip Technology – Instant, hassle-free installation available in 2 of 3 models
- GripSafe ST: Precision-Engineered for Unrivaled Performance
Unmatched Grip & Durability with Exclusive Gritlock® Technology
- Gritlock® Surface Coating – Our proprietary technology ensures an ultra-secure hold
- Thousands of Microscopic Contact Points – leaves virtually no surface damage while maintaining a secure grip
- Exceptionally Dense & Long-Lasting – Built to withstand the toughest conditions
- Proven Resilience – Survives thousands of full-cycle hydro tests with zero performance loss
- Universal Compatibility – Non-contaminating coating, engineered to work with all alloy piping varieties
- GripSafe ST: Advanced Grip Technology for Superior Performance
Multi-Durometer Seal Technology – Patented for Superior Performance
- Precision-Engineered Sealing – Multi-durometer design prevents seal deformation, eliminating mushrooming or collapsing at the edges.
- Patent-Protected Innovation – A breakthrough in durability and reliability, designed for long-lasting performance
- Enhanced Flexibility & Strength – Expands beyond standard seal types, ensuring a superior, adaptable grip
- GripSafe ST:Redefining Sealing Technology with Innovation
Lightweight. Ultra-Strong. Built for Perfomance.
ALUMINUM & STAINLESS STEEL BODY ON 10" AND LARGER MODELS
- Aviation-Grade Aluminum – Superior strength without the excess weight
- Lighter Than Competing Models – Enhances handling, installation, and overall efficiency
- Durability Without Compromise – Engineered for maximum performance in the toughest conditions
- GripSafe ST: Strength Meets Innovation
GRIPSAFE ST IIB PLUG APPLICATIONS
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When paired with a ported blind flange, GripSafe ST IIB plugs subject the weld joint to longitudinal (axial), circumferential (hoop), and radial pressures akin to those experienced during hydro-testing of the entire piping system. This feature surpasses the capabilities of traditional flange test plugs (FTPs), which solely apply hoop and radial stresses.
Block outlet piping in vessels to pressurize for cleaning or testing purposes.
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UNMATCHED SAFETY & RELIABILITY
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Thanks to its groundbreaking patented design, GripSafe incorporates independent self-gripping technology that significantly reduces the likelihood of plug movement downstream immediately after installation.
The advanced system evenly distributes the load among the gripping wedges, guaranteeing optimal surface contact and secure holding. As pressure mounts behind the plug, the wedges tighten their grip. Regardless of any pipe irregularities, each wedge adjusts independently to ensure plug security and safety. Combined with its automatic gripping function, GripSafe elevates the concept of "self-gripping" to new heights.
Unlike competing products that rely on serrated jaws or sharp edges to grip the pipe, GripSafe ST features a distinctive wedge system to securely hold the plug in place, while virtually leaving no surface damage, and reducing the potential need for pipe cleanup.
GripSafe plugs feature Gritlock®, an exclusive brazed texture on the gripping wedges suitable for any metal type without introducing carbon contamination. Unlike other plugs, GripSafe doesn't necessitate alternative parts for application in stainless steel and other alloy pipes where cross-contamination poses a concern.
On average, GripSafe plugs are lighter than competing products. As plug sizes increase, substantial weight disparities emerge, with larger sizes experiencing reductions of up to 50% in weight without compromising their holding capabilities.
(P) - When testing in ANSI A106 Grade B pipe material, a Pipe Reinforcement Device (PRD) is required if the Max Plug Back-Pressure Rating (PSI) shown in the last column of our specifications pages for plug sizes 4" and above will exceed the number identified after the "P-". If the material is not A106 B, consult USA Industries engineering team for more information.
In general, a pipe reinforcement device is strongly recommended for all pipes 10/10S and thinner walled.
CUSTOMER TESTIMONIAL
"GripSafe plugs have been valuable assets on the LNGC site. The quick and easy installation, use, and removal of the plugs have made testing plain end pipe simple. The Lifting Device makes rigging of the larger plugs into position fast, convenient, and safe. The design of the grippers leave little to no marks inside the pipe. Torque values and plug info on the front plate makes plug identification and double-checking for the right plug usage easy. Overall, the GripSafe plugs are an excellent product."
T. Read / Hydro Foreman,
S. Daigle | Global EPC Company
Patents & Trademarks
Designed, Manufactured & Supplied Exclusively by USA Industries, an ISO 9001:2015 Certified Company.
- US PATENTS: 9,927,058 | 9,810,364 | D894,349 | 10,746,339 | 11,391,404 | 11,408,548 | 11,408,549
- US REGISTERED TRADEMARKS: 6,540,339 | 6,540,338 | 6,2569,105
- CANADIAN PATENT: 3,004,787 | 3,114,389 | 3,086,395 | 3,144,389
- CANADIAN INDUSTRIAL DESIGN: CA 186293
- CANADIAN TRADEMARKS: 1,168,054 | 1,168,053
- EUROPEAN PATENT: EP3377797 B1 | EP386575B1 | EP3728929B1
- EUROPEAN PATENT [Germany]: 602016051864.3
- EUROPEAN UNION DESIGN REGISTRATION: 00628264-001
- EUROPEAN UNION INTERNATIONAL TRADEMARK REGISTRATION #'s: 1567890 | 1550298 | 1550337
- AUSTRALIAN PATENT: 2016355337 | 2018392008 | 2022231742 | 2020304050
- AUSTRALIAN TRADEMARK NUMBER: 2120735
- Other US and Foreign Patents Pending
A Critical Reminder: Conducting pressure testing poses significant hazards, demanding strict adherence to safety protocols. Ensure all connections, valves, flanges, and fittings are suitable for pressure testing. Verify the compatibility of line ID & Plug Range. Most importantly, never position yourself in front of a test plug or enclosure during testing. Discharge from a plug during testing could result in severe injury or fatality.
Failure to adhere to the complete installation procedures outlined in our operating manuals may lead to personnel injury and equipment damage.
- GSST Plug Model Required
- Size
- Pipe Schedule
- Test Pressure
- Quantity Needed
- Rental or Purchase
- Necessary Delivery Date

GSST GSST Reverse Pressure Inboard Insertion Blocking (IIBB) Downloads
Temperature Range
- -10° to 170°F - Continuous
- 200°F - Intermittent

Industry Compliance
- ASME B16.5, ASME B31.1, ASME B31.3
- Meets ASME PCC-2-2018 standards