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Manufactured In-House
100% USA Materials
High Pressure Isolation & Testing Products

GripSafe® ST ORB
Superior Technology

Available to Rent or Buy
Save
Money.
Rent.
Lower upfront cost • No storage • Reconditioned every turnaround
Quickly, safely and reliably hydrotest open-ended pipe, pipelines, and pressure vessels using USA's high pressure Outboard Retraction Blocking plug
GripSafe ST Outboard Retraction Blocking Pipe Plug

*4” Schedules 120, 160 and XXH –
all other 4” schedules employ the larger body style

**Larger sizes and custom configurations available upon request.

GSST-36in-ORB-2jpg

36" GSST Outboard Retraction Blocking (ORB)

GSST ORB
To Order Call:
(800) 456-8721 Specify:
  • GSST Plug Model Required
  • Size
  • Pipe Schedule
  • Test Pressure
  • Quantity Needed
  • Rental or Purchase
  • Necessary Delivery Date
ISO 9001:2015 Certified
ISO 9001:2015 Certified
ASME Compliant
ASME Compliant
9+ Years R&D
9+ Years R&D
21 Patents
21 Patents
Reusable Design
Reusable Design

Key Technical Features

Patented innovations that enable reliable high-pressure containment

Feature 01

Intelligent Wedge System

Self-adjusting wedges distribute load evenly across the pipe wall, automatically conforming to ovality and surface irregularities. Grip strength increases proportionally with test pressure.

  • Even Load Distribution: Eliminates pressure points
  • Adaptive Design: Accommodates pipe variations
  • Pressure-Responsive: Stronger under load
Feature 02

Gritlock® Surface Technology

Proprietary coating creates thousands of microscopic contact points for superior grip without surface damage. Proven durability through extensive field testing.

  • Microscopic Contact: Maximum grip area
  • Surface Protection: Minimal pipe marking
  • Long-Lasting: Hundreds of cycles
Feature 03

Tri-Ply® Multi-Durometer Seals

Patented Tri-Ply seal design prevents deformation and edge mushrooming. Enhanced flexibility and strength beyond standard seal configurations.

  • Deformation Resistant: Maintains seal integrity
  • Enhanced Flexibility: Superior adaptation
  • Patent Protected: Proprietary design
Feature 04

Aviation-Grade Construction

Lightweight aluminum construction reduces handling requirements while maintaining structural integrity under extreme forces.

  • Material: Aviation-grade aluminum
  • Weight: Optimized for handling
  • Durability: Maximum performance
Feature 05

Temperature Performance

Engineered seal materials maintain integrity across industrial temperature ranges.

  • Continuous: -10°F to 170°F
  • Intermittent: Up to 200°F
  • Material Stability: Consistent performance
Feature 06

Standards Compliance

Designed and manufactured to meet or exceed relevant industry standards for piping systems.

  • ASME B16.5
  • ASME B31.1/B31.3
  • ASME PCC-2-2018
GripSafe®ST ORB

All dimensions in inches

NPS
(in)
Schedule Part Number Tool Dia.
(in)
Rec. ID Range*
(in)
Nom. Pipe ID
Clearance (in)
Approx. Wt.
(lbs)
Tool Length
(in)
Torque Range
(ft-lbs)
Comp. Hex Nut
Socket (in)
Backup Wrench
Size (in)
Back Pressure
Vent Thread
Back Pressure
Rating (PSI)
Norm Max
● NEVER EXCEED THE MAXIMUM RATED PRESSURE OF THE LOWEST RATED COMPONENT IN THE SYSTEM. * Larger sizes and custom configurations available upon request.
*4" Schedules 120, 160 and XXH – employ the smaller profile body style - all other 4" schedules employ the larger body style
NPS 6–24: Tool OD must be within 1/8" concentricity to the pipe ID.
Data is subject to change. Consult manufacturer to verify this is the latest release.
USA Industries — South Houston, TX | Prairieville, LA — (800) 456-8721 — www.USAIndustries.com

©2026 USA Industries • ISO 9001:2015 • M-GSST-ORB-3/4-36-2026


Pressure Testing Solutions

Isolation/Test Plugs vs. Welding End-Caps

Isolation/test plugs deliver faster turnarounds, lower costs, improved safety, and greater flexibility than welding end caps on pipe spools — transforming pressure testing from a bottleneck into a streamlined operation.

The Comparison

GSST Isolation / Test Plugs

Recommended

Welding End-Caps

Legacy Method
▲
Speed
Install in minutes with no hot work. Immediate test-readiness with rapid insertion and removal.
▼
Speed
Requires welding, cooling, then grinding off after test. Each cycle adds hours of labor and downtime.
▲
Cost
Reusable across multiple tests. No welders, no consumables, no post-test grinding or NDE required.
▼
Cost
Single-use caps, welder labor, consumable materials, grinding, and follow-up inspections all drive up costs.
▲
Safety
No hot work permits needed. Eliminates arc flash, fumes, and burn hazards. Cold installation process.
▼
Safety
Open flame, arc flash, fumes, and hot metal. Requires hot work permits, fire watches, and PPE protocols.
▲
Flexibility
Quickly reposition and reuse plugs across different pipe sizes and test configurations as needed.
▼
Flexibility
Each cap is permanently welded and must be destructively removed. Changes require starting over.
▲
Quality Impact
No heat-affected zones. When installed correctly, low risk of contamination or distortion to the pipe spool material.
▼
Quality Impact
Welding introduces heat-affected zones, potential distortion, and requires post-weld NDE verification.

Why Plugs Win

01

Faster Turnarounds

Eliminate welding and grinding time. Go from installation to pressure testing in minutes, not hours — keeping your project schedule on track.

02

Lower Total Cost

Reusable plugs replace single-use caps, welder labor, consumables, and post-weld inspections. The ROI is immediate and compounding.

03

Improved Safety

Zero hot work means no fire watches, no arc flash risk, no fume exposure, and no hot work permits. A fundamentally safer process.

04

Greater Flexibility

Quickly adapt to changing test configurations. Reposition plugs across different spools and pipe sizes without rework or waste.

The Bottom Line

Isolation/test plugs transform pressure testing from a bottleneck into a streamlined operation — delivering speed, savings, safety, and flexibility that welding end-caps simply cannot match.

GSST ORB Technical Documentation


Why USA Industries?

40+ years of manufacturing excellence and innovation

Fast Turnaround

Fastest Turnaround

Same-day shipping available on stock items. Custom orders in days, not weeks.

In-House Manufacturing

Manufactured In-House

U.S. produced steel, PMI verified, QC certified.

ISO Certified

ISO 9001:2015 Certified

Quality-driven manufacturing process ensures excellence.

Engineering-Innovation

Engineering Innovation

Precision-Engineered Industrial Solutions — Delivered Fast!

USA Materials

100% USA Materials

All raw materials sourced from American mills.

Our product specialists are available 24/7. Call Now.

(800) 456-8721
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