The 10,000 psi External Twist Connector for Threads and Flares

The FasTest TwistMate MET is a manual twist connector that seals onto external threaded ports, flares, and compression fittings at pressures up to 10,000 psi (689 bar) — matching the TwistMate® MIT for pressure while working the opposite side of the connection. Where the MIT seals into a port, the MET seals onto the male end.

That male-side coverage is what defines its application. The FasTest TwistMate MET connects to NPT external, BSPT/BSPP (G) external, and metric external threads, plus JIC 37° flares and 45° flares — which is precisely the population of fittings found on the ends of hydraulic hose assemblies, tube assemblies, and adapters. Every one of those ends has to be proof and leak tested before the assembly ships, and the MET is built to make that connection at pressures well beyond conventional connectors.

Sealing is pressure-assisted, so rising test pressure energises the seal further and helps the connector resist movement rather than working to push it off. At 10,000 psi that behaviour is what keeps the connection stable through the test, and the manual twist gives the operator direct, deliberate control over engagement rather than depending on a spring or quick-release mechanism.

Because the FasTest TwistMate MET seals on its own seal element rather than on thread tape or sealant, nothing is introduced into the assembly under test — the leak-tight seal prevents contamination of the media and, with it, reduces scrap and test damage. Its internal counterpart is the TwistMate® MIT; where faster or automated actuation matters more than peak pressure, the FasMate® FX covers external threads and features to 5,000 psi.

The Problem the FasTest TwistMate MET Solves

Proof testing the male end of a hose or tube assembly at high pressure puts several requirements in conflict:

• The sealing face is the deliverable: On a JIC 37° or 45° flare, the flare face is the sealing surface of the finished assembly. Repeatedly threading and torquing a test fitting against that face risks scoring it — damaging the very surface the customer relies on, and turning a passing test into a scrapped assembly.
• Thread sealant contaminates the assembly: A threaded test fitting seals on tape or pipe dope. Both shed into the assembly being tested, which on a hydraulic or aerospace line is contamination that can carry through to the finished product.
• 10,000 psi is beyond most connectors: Proof testing at this level demands a connection that is positively engaged and genuinely rated for it, not one that is optimistically specified.
• Connections creep under load: A connection that shifts at 10,000 psi leaks, and a leak at that pressure ends the test and risks both the part and the operator.

The FasTest TwistMate MET addresses each: it seals on its own seal rather than on sealant, it is rated from vacuum to 10,000 psi, its pressure-assisted seal resists movement as pressure rises, and the twist connection avoids the repeated torquing against a flare face that a threaded fitting requires.

Key Features

Manual Twist Sealing Connection to External Threaded Ports and Compression Fittings

The FasTest TwistMate MET connects with a manual twist onto external threaded ports, flares, and compression fittings. Manual actuation is the appropriate choice at this pressure class: it gives the operator direct control over engagement, with nothing mechanical standing between their intent and the state of the connection. One tool covers external threads, JIC 37° and 45° flares, and compression fittings, so a bench handling a mixed population of assembly ends does not need a separate connector for each.

Vacuum to 10,000 psi (689 bar)

The FasTest TwistMate MET is rated for vacuum through to 10,000 psi (689 bar) — double the 5,000 psi rating of the FasMate® range and the highest pressure FasTest offers in a connector, alongside its MIT counterpart. That span covers evacuation through to proof testing at the extreme end of hydraulic and aerospace validation.

Pressure-Assisted Sealing Resists Movement Under Pressure

Pressure-assisted sealing means rising test pressure energises the seal further rather than working against it. On an external connection this matters particularly, because pressure acts to push the connector off the male end — and a pressure-assisted seal converts that force into sealing effort instead, so the connection becomes more secure as the test intensifies.

Leak-Tight Seal Prevents Media Contamination, Scrap, and Test Damage

Because the FasTest TwistMate MET seals on a dedicated seal element rather than on thread tape or sealant, nothing is introduced into the assembly that can shred, migrate, or break loose downstream. The leak-tight seal prevents contamination of the media, and that directly reduces scrap and test damage — which matters most on hydraulic and aerospace assemblies, where a contaminated part is an expensive loss late in the build.

Technical Specifications

Where the FasTest TwistMate MET Is Used

Hydraulic Hose Assembly Proof Testing

Hydraulic hose assemblies are built with male fittings crimped on each end, and every assembly is proof tested before it ships. The FasTest TwistMate MET connects directly to those male ends — NPT, BSPP, JIC 37° flare, metric — at up to 10,000 psi, without threading a test fitting against the flare face on every cycle.

Tube Assembly and Fitting Testing

Formed tube assemblies and adapters present external threads and flares that require leak and pressure validation. Because the MET covers NPT, BSPT/BSPP, metric, JIC 37° and 45° flare in one connector, a single tool handles a mixed population of assembly ends on one bench.

Aerospace Component Testing

Aerospace fluid and hydraulic components are tested at high pressure under strict cleanliness requirements. The MET’s sealant-free, leak-tight connection supports that testing while protecting both the media and the sealing faces on parts where a scrapped component is an expensive outcome.

Vacuum and Pressure Test Benches

With a range running from vacuum to 10,000 psi, the FasTest TwistMate MET suits benches performing both evacuation and high-pressure proof testing on the same assembly, removing the need to change connectors between stages of the test sequence.

FasTest TwistMate MET vs. a Threaded Female Test Fitting

Frequently Asked Questions

Q: What is the FasTest TwistMate MET?

A: The FasTest TwistMate MET is a manual twist connector that seals onto external threaded ports, flares, and compression fittings for vacuum and pressure testing up to 10,000 psi (689 bar) — the highest pressure rating in the FasTest connector range.

Q: What does the TwistMate MET connect to?

A: NPT external, BSPT/BSPP (G) external, and metric external threads, plus JIC 37° flares, 45° flares, and compression fittings — the male-side fittings found on the ends of hose and tube assemblies.

Q: What is the difference between the TwistMate MET and the TwistMate MIT?

A: They work opposite sides of the same connection. The MET seals onto external threads and flares — the male end. The MIT seals into internal threaded ports, swivel nuts, and O-ring boss ports — the female side. Both are manual twist and both are rated to 10,000 psi (689 bar). Choose the MET for male ends and the MIT for ports.

Q: What is the maximum pressure rating of the TwistMate MET?

A: Vacuum to 10,000 psi (689 bar) — double the 5,000 psi rating of the FasMate® FN and FX, and the highest pressure FasTest offers in a connector.

Q: Does the TwistMate MET need thread tape or sealant?

A: No. The MET seals on a dedicated seal element rather than relying on thread tape or pipe dope. That is what allows it to make a leak-tight connection that prevents contamination of the media — nothing is introduced into the assembly that can shred or migrate downstream.

Q: Will the TwistMate MET damage a flare sealing face?

A: The MET makes its seal without repeatedly torquing a threaded fitting against the flare face, which is where the risk of scoring a sealing surface normally comes from during repeated test cycles. On assemblies where the flare face is the finished sealing surface, that distinction matters.

Q: What does pressure-assisted sealing mean on the TwistMate MET?

A: It means rising test pressure energises the seal further rather than working against it. On an external connection, pressure would otherwise act to push the connector off the male end — pressure-assisted sealing turns that force into sealing effort instead.

Q: How is the TwistMate MET actuated?

A: By manual twist. Manual actuation gives the operator direct, deliberate control over engagement, which is the appropriate approach at this pressure class.

Q: How does the TwistMate MET compare to the FasMate FX?

A: Both connect externally to threads and fittings. The TwistMate MET is manually twisted and rated to 10,000 psi; the FasMate® FX uses a split collet with lever, thumb valve, or pneumatic actuation and is rated to 5,000 psi. Choose the MET when test pressure exceeds 5,000 psi, and the FX when faster or automated actuation matters more than peak pressure.

Q: What industries use the TwistMate MET?

A: Fluid power and hydraulics, aerospace, and general high-pressure component testing — particularly hose and tube assembly proof testing, where male threads and flares need leak-tight connections above the range of conventional connectors.