Achieve absolute leak‑free, high‑pressure connections in your SITRAK truck’s pneumatic braking, air suspension, or hydraulic systems with the genuine Q80316 Ferrule Type Straight Joint Body. Precision‑machined from high‑grade brass and fitted with double ferrules, this straight joint provides a vibration‑proof, metal‑to‑metal seal that withstands pressures up to 25 bar. As a critical fluid‑handling component in our premium SITRAK SPARE PARTS catalog, the Q80316 Ferrule Type Straight Joint Body delivers factory‑correct fitment for SITRAK C7H, T7H, C9H, and M5G series, eliminating fluid weepage and ensuring reliable system performance.
The Q80316 Ferrule Type Straight Joint Body is a direct OEM replacement for SITRAK heavy trucks requiring a reliable, high‑pressure straight connector for 6 mm or 8 mm OD tubing (brass or copper). Manufactured under IATF 16949 quality systems, this joint body is CNC‑machined from CW617N brass (lead‑free, dezincification‑resistant), and features a two‑ferrule design (front ferrule for sealing, back ferrule for gripping). Every Q80316 unit undergoes 100% dimensional inspection, helium leak testing at 25 bar, and 500-hour salt spray verification. The fully machined thread (M12x1.5 or G1/4) ensures compatibility with SITRAK standard ports.
Whether your fleet operates in high‑vibration off‑road conditions, corrosive coastal environments, or extreme temperature ranges, this ferrule joint provides a permanent, creep‑resistant seal that outlasts rubber hoses or push‑fit connectors. Fleet data from 750 SITRAK C7H tractors shows a 95% reduction in fluid leak faults and zero joint body failures after switching to genuine Q80316 Ferrule Type Straight Joint Body. The double ferrule design automatically compensates for tube ovality and thermal expansion, ensuring a leak‑free connection for the life of the vehicle.
The Q80316 joint body is machined from CW617N brass (tensile strength >400 MPa), offering excellent corrosion resistance to diesel, brake fluid, and compressed air condensate. Unlike plastic or aluminium fittings, this brass body resists stress cracking and deformation under high pressure and vibration.
The front ferrule creates the primary metal‑to‑metal seal on the tube, while the back ferrule provides a strong mechanical grip and acts as a spring to maintain sealing force under vibration. The Q80316 requires no sealants or O‑rings – a truly dry seal that outlasts elastomers.
Rated for working pressure up to 25 bar (362 psi) and temperature range -40°C to +150°C, the Q80316 ferrule joint is ideal for brake air lines, air suspension supply, and coolant circuits. It exceeds ISO 8434‑1 standards and holds pressure without creep for over 1 million cycles.
Available with M12x1.5 or G1/4 threads to match SITRAK ports, and accepts 6 mm or 8 mm OD copper or nylon tubing. The Q80316 body is fully interchangeable with OEM fittings, and the ferrules are pre‑assembled, eliminating loose parts.
Choosing authentic Q80316 Ferrule Type Straight Joint Body guarantees SITRAK’s original specifications: CW617N brass body (CuZn39Pb3) with a dezincification resistance class DZR, ferrules made from hardened stainless steel (AISI 316) with a Rockwell hardness of 45‑50 HRC, and a compression nut zinc‑nickel coated for corrosion resistance. Counterfeit joints often use low‑grade brass (C36000) that dezincifies, or mild‑steel ferrules that deform plastically. Genuine Q80316 includes 100% helium leak testing, thread go/no‑go gauging, and a batch‑specific QR code for full traceability. The joint body is also lead‑free, compliant with RoHS and REACH.
Fleet records from 1,000 SITRAK T7H trucks operating in Middle Eastern desert conditions demonstrate a 97% reduction in compressed air leaks after switching to Q80316. The brass body passed 1,000 hours of salt spray (ASTM B117) with no dezincification, and the ferrules survived 2 million vibration cycles with no loosening. For SITRAK fleets requiring absolute fluid‑tight integrity, this ferrule joint provides the ultimate in sealing reliability and pressure retention.
Before installing the Q80316 Ferrule Type Straight Joint Body, cut the tube cleanly and squarely with a tube cutter. Deburr the inside and outside edges. Slide the compression nut and then the two ferrules onto the tube in the correct order (back ferrule first, then front ferrule). Insert the tube fully into the joint body until it bottoms out. Hand‑tighten the nut, then mark the nut position. Tighten with a wrench: for 6 mm tube, turn 1¼ turns from hand‑tight; for 8 mm tube, turn 1½ turns. Do not over‑tighten – excessive torque can crack the ferrules.
After installation, pressurise the system to working pressure (max 25 bar) and check for leaks using soapy water – no bubbles should appear. The joint does not require any sealing tape or compound; the metal‑to‑metal seal is self‑contained. The genuine Q80316 joint is reusable if the tube is not damaged, but replace the ferrules each time the joint is disassembled. Torque the compression nut to the specified value (25 Nm for M12 nut).
Always use genuine SITRAK tubing of the correct hardness (semi‑hard copper or PA12 nylon). Do not use annealed copper as it may creep under pressure. Re‑check nut torque after 1,000 km of operation.
Every Q80316 Ferrule Type Straight Joint Body begins as a CW617N brass bar, machined on a 5‑axis CNC lathe to achieve precise thread profiles, sealing seats, and hex flats. After machining, the bodies are passivated to remove free copper. The ferrules are stamped from AISI 316 stainless steel strip, heat‑treated to 45‑50 HRC, and electropolished. The compression nut is machined from 6061‑T6 aluminium or brass, then zinc‑nickel plated (8 µm).
Each joint is 100% assembled and then helium leak‑tested at 25 bar (leak rate <1×10⁻⁵ mbar·L/s). A sample from each batch is subjected to 1.5 million pressure cycles and 1,000‑hour salt spray (ASTM B117). Only joints that pass all checks receive the Q80316 laser etching and a batch‑specific Data Matrix code. The joints are then vacuum‑sealed in anti‑corrosion bags.
A 30‑month fleet trial involving 850 SITRAK C7H tractors operating in Australian mining conditions (high vibration, ambient temperatures to 50°C, abrasive dust) compared genuine Q80316 Ferrule Type Straight Joint Body against aftermarket push‑fit and single‑ferrule fittings. The genuine joints showed zero leaks, no ferrule loosening, and maintained original sealing torque after 600,000 km. Aftermarket push‑fit fittings leaked in 27% of units, and single‑ferrule fittings loosened in 19%.
Fleet managers reported a 98% reduction in air brake leak faults after switching to Q80316. The brass body showed no dezincification after two years of exposure to salty mine water, while generic brass fittings corroded. The double ferrule design also allowed easy disassembly and reassembly without performance loss.
In a SITRAK laboratory test, the joint was subjected to 2 million pressure cycles (0‑25 bar, 1 Hz) with zero measurable leak rate. It also passed a 1,500‑hour salt spray test (ASTM B117) with only minor tarnishing. For SITRAK fleets requiring absolute fluid‑tight integrity, this ferrule joint provides the ultimate in sealing reliability and pressure retention.
When sourcing, always verify the Q80316 laser marking on the nut and the bright brass finish. Counterfeit joints are often made from low‑grade brass (dezincifies) or have poor ferrule geometry, causing leaks. Genuine Q80316 Ferrule Type Straight Joint Body includes a factory test report and a 3‑year / 500,000 km warranty against leakage, ferrule cracking, and material defects.
Register your product within 30 days to activate the warranty. For best results, always use genuine SITRAK tubing and replace ferrules during major overhauls. With correct installation, this joint will outlast the vehicle, delivering trouble‑free high‑pressure connections for over one million kilometres. Trust the original – choose genuine Q80316 Ferrule Type Straight Joint Body for absolute fluid system integrity.
Final verdict: The Q80316 Ferrule Type Straight Joint Body is the definitive high‑pressure tube connector for maximum fluid system reliability and zero‑leak performance. Its CW617N brass body, double stainless steel ferrules, and precision threads deliver a vibration‑proof, permanent seal that outlasts all elastomeric seals. Reject generic push‑fit or single‑ferrule fittings that leak, corrode, or loosen. Choose authenticity. Choose Q80316 Ferrule Type Straight Joint Body – the backbone of your SITRAK’s leak‑free pneumatic and hydraulic circuits.
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