1/4 Union Straight Push to connect fittings Stainless Steel Pneumatic Push Connectors, 1/4" x 1/4" OD Tube Quick Connect Fittings Air Line Fittings for 1/4 inch Tube 2Pack

A barb and a hose clamp will hold an air line, right up until the clamp bites through the tube or the hose has to come off in a hurry. A push-to-connect union does the job with a collet: press the tube in and it grips.

Tube into the collet, nothing to tighten

A straight union carries no thread anywhere on it — both ends take 1/4 inch OD tube. Push the tube home, a gripping ring bites its outer wall and an O-ring seals against it. The release collar is elliptical rather than plain round, which the supplier says keeps the collet square as it frees the tube. Nothing is clamped, so the joint still turns once fitted.

Nickel-plated brass and a Viton seal

The body is nickel-plated brass, which the supplier credits with corrosion resistance and ductility at high temperature. The seal is FKM, sold under the Viton name, rather than a general-purpose nitrile. The title, however, calls these connectors stainless steel. The two disagree, so both are listed below.

Specifications

• Style: straight union, tube to tube, no thread
• Tube: 1/4 inch OD both ends
• Body: nickel-plated brass (body copy) vs stainless steel (title) — these conflict
• Seal: FKM (Viton) O-ring
• Pressure: 2 MPa | 290 psi as printed; the supplier does not say whether that is working or maximum
• Fluids admitted: air, water, steam
• Temperature: -20°C to 120°C | -4°F to 248°F
• Tubing: PU, nylon, soft PE
• Pack quantity: two, taken from the title; no count appears in the body copy

Before you plumb these in

• Steam sits in the fluid list against a 120°C ceiling. Check that with the supplier before any steam line.
• Truck and trailer air suspension and brake circuits appear in the application list. Air brake work is safety-critical and belongs with a qualified person.
• Measure your tubing across the outside first. A 1/4 inch OD tube is not 1/4 inch bore.

Sensible spares for a compressor line where a joint comes apart twice a day.

Returns, Refunds, and Replacements

Products that are received faulty, damaged, or not as described are eligible for a return, refund, or replacement in accordance with the Australian Consumer Law (ACL). We are committed to ensuring all products meet the standards of quality and reliability expected by our customers. However, please note that we do not accept returns or provide refunds for change of mind. We encourage you to carefully consider your purchase to ensure it meets your needs and expectations.

Delivery Timeframe

Please note that we cannot guarantee the exact date of arrival, and the delivery timeframes (excluding weekends and public holidays) are as follows:

For customers in Victoria, approximately 7-10 working days; For customers in NSW, SA, ACT, and QLD, approximately 9-12 working days; For customers in WA, NT, and TAS, approximately 9-12 working days.