

Hydraulic Tube High Pressure Metric Tube Coupling, Straight Coupling, 6mm x 6mm
KRAM6CR
Product Features:
Hydraulic Tube High Pressure Metric Tube Coupling, Straight Coupling, 6mm x 6mm
High Pressure Metric Tube Couplings
Working Temperature:
Nitrile: -40°C to +100°C
Viton: -20°C to 150°C
Maximum Working Pressure:
6mm to 22mm: 680 bar
25mm to 50mm: 500 bar
Benefits:
- Leak free O-ring seal
- Safe joint every time
- Low tightening torque and clamping force rises with the internal pressure.
- Low installed cost, no welding (so inert gas purging, NDT and excessive flushing are not required), minimal tube preparation and no special assembly equipment required.
- Demountable and reusable, can be used with most tube materials.
Feautures:
- Body - mild steel, stainless steel or cupro-nickel. Compatible with most fluids and environments. Located o-ring and tube.
- O-ring - nitrile, FPM (Viton), EP or FEP encapsulated FPM. Compatible with most fluids. Highly resistant to leakage even under severe vibration, pressure pulsation and temperature cycling. Provides diametric seal between tube OD and Body cavity.
- Nut - mild steel, stainless steel or cupro-nickel. Compatible with most environments. Closes split collet and retains sealing mechanism.
- Back-up washer - mid steel, stainless steel, or cupro-nickel. Provides additional support for the tube and locates the o-ring.
- Split collet - mild steel, stainless steel or cupro-nickel. Clamping force rises with pressure. Large clamping area ensures minimal deformation of the tube. Retains tube in position.
- 3:1 safety factor
- Derate by 50% for high pressure gas systems
- Pressure ratings based on the tube OD tolerance to BS360? and DIN2391C
All fittings also available in the following material:
- Stainless steel
- Cupro-nickel
Seals available on request:
- EP (ethylene propylene)
- FEP encapsulated FPM
All fittings supplied with Nitrile seals as standard.
Shipping Policy
Thank you for visiting and shopping at www.flowfitonline.com. Following are the terms and
conditions for the Shipping Policy for Harrier Fluid Power Ltd T/A Flowfit.
Carriers used
We use some of the top carrier companies in the world, although you can use your own carrier to collect the order.
All deliveries require a signature on delivery. Below are our main carrier companies.

Shipment processing time
All orders placed before 4pm Monday to Thursday and 3pm on a Friday, are processed and despatched on the same business day.
If we are experiencing a high volume of orders, shipments may be delayed by 1-2 Days.
Please allow additional days in transit for delivery. If there will be a significant delay in shipment of your order, we will contact you via email or telephone.
Domestic Shipping rates & delivery estimates
Shipping charges for your order will be calculated and displayed at checkout.
Area |
Terms |
Cost |
Estimated Delivery time |
UK Mainland |
Order Value Below £99.99 + VAT |
£9.99 + VAT |
Next Business Day |
|
Order Value Over £99.99 + VAT |
£7.99 + VAT |
Next Business Day |
|
Delivered Before 12pm* |
£20.00 + VAT |
Next Business Day |
|
Delivered Before 9am* |
£40.00 + VAT |
Next Business Day |
|
|
|
|
UK Highlands & Isles |
Order Value Below £99.99 + VAT |
£30.00 + VAT |
2-3 Days |
|
Order Value Over £99.99 + VAT |
£27.50 + VAT |
2-3 Days |
* Overnight delivery is only available for orders with delivery addresses within the United Kingdom.
If you require a weekend delivery, please contact our Sales department for more information.
International Shipping rates & delivery estimates
Shipping charges for your order will depend on weight and country the order is to be shipped to. All cost will be calculated and displayed at checkout.
All orders for delivery within the EU will arrive on a 2-5 delivery service depending on Country location.
All shipments outside the EU will arrive on a 3–7-day delivery service depending on Country location.
Please check for accurate delivery times with our Sales department.
Delivery delays can occasionally occur.
If you Parcel has not arrived within the time expected please do not hesitate to contact us.
Please ensure the ship to address you type during checkout is correct. We are not responsible for any wrong or undeliverable addresses.
Shipment confirmation & Order tracking
You will receive a Shipment Confirmation email once your order has shipped containing your
tracking number(s). The tracking number will be active within 24 hours.
Customs, Duties and Taxes
Duties and Taxes:
Import duties, taxes, and brokerage fees are not included in the product price or shipping and handling cost. These charges are the buyer’s responsibility as we are only charging the transportation fee for your order. You may check with your country’s customs office to determine if there will be additional costs.
Regulations and Restrictions:
The buyer is responsible for obtaining information regarding their country’s laws, regulations, and restrictions that may apply when purchasing our products. By placing an international order (shipping outside of the United Kingdom) the buyer is responsible for abiding by their country’s laws, regulations, and restrictions. If product is seized and destroyed by customs, we will NOT be responsible for the losses, product, or shipping refunds.
Harrier Fluid Power Ltd T/A Flowfit cannot be held responsible for the delays due to customs.
Damages
Harrier Fluid Power Ltd T/A Flowfit is not liable for any products damaged or lost during shipping. If you received your order damaged, please contact the shipment carrier to file a claim. Please save all packaging materials and damaged goods before filing a claim.
Returns Policy
Our Return & Refund Policy provides detailed information about options and procedures for
returning your order.