Push-To-Connect Air Line Tube Fittings 4Mm Or Or 5/32 Straight Union, 10 Pack User's Guide 1. Except air and water,don?t attempt to use the fittings on other fluids 2. The tube fitting is prohibited where spark and fire might be occurred 3. The tube fitting is prohibited if water temperature is above 60?C 4. Never apply tube joint with additional external load(bending,twist or pulling),otherwise damage or leakage will be occurred. Caution Check the end of tubing for a right angle cutting and check the external surface of tubing for any damage or scratch.Please refer to following instruction in connection of tubing.When you insert the air tubing into the joint,you will have two-step feeling.Section one is locking claw and section two is sealing ring.Must insert tube into section two. Sleeve is used in tubing connection and disconnection.The sleeve is designed as an oval shape,which is covienient in assembly and disassembly.However,round sleeve is available to met any special demand the product has limited space for oval sleeve.After connection of tube joint and tubing,always try to pull tubing and ensure its firm connection. Always use proper tool to tighten external hexagonal and internal hexagonal parts of the tube fitting.Always apply recommended torque on screws otherwise extra torque might damage thread and cause air leakage while insufficient torque might cause loose screws and air leakage. Product Features Type:Push in fitting/Push to connect Union/Straight Weight:4.8g/Size:8mm Fluid Admitted:Air Vacuum Water (no freezing) Working Pressure:0-1.0MPa | 0-150psi/Applicable Tube:PU / PA / PE / PVC Proof Pressure:3.0Mpa | 435psi.Seal O-ring:NBR/ Lock Claw:Stainless Steel(SUS)/Body:Plastic(PET) Working Temperature:0-60C | 32?140F/Negative Pressure:-100Kpa | -29.5 In Hg Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!