Tube Fitting SUS316

RoHS2 Compliant

Newly introducing Lock-claws type Push-in fitting made of SUS316.

  • SUS316 is used for the main metal parts. SUS316: Excellent corrosion resistance.
Seal rubber
  • FKM is used as seal rubber material. FKM: Excellent in heat resistance, chemical resistance, and ozone resistance.
  • No copper-based metallic material is used in flow paths
  • HNBR or FKM is used for the seal rubber material. *Some products are only compatible in the flow path.
  • No lubrication is used during assembly.


  • Fluorine grease is used as grease, and the product is packaged in a clean room after cleaning with clean air.


Push-in fitting with Lock-claws made of SUS316.

High reliability and outstanding operability.

The Lock-claws mechanism similar to the Tube Fitting Standard Series is adopted.

Excellent corrosion resistance.

Metal material : SUS316
Rubber material : FKM

Success in miniaturization. (Comparison with our conventional collet type Stainless SUS316 series)

Clean-room Package specification is available. (Optional)

Clean-room Package specification is available. (Optional)


Fluid medium Air, Water, Others such as chemicals (Conditional*)
Max. operating pressure 1.0MPa
Max. vacuum -100kPa
Operating temp. range -5~150℃(No freezing)


* Make sure to follow the instructions below when the fluid medium is water or liquid.

Surge pressure must be controlled lower than max. operating pressure when using water or liquid as a fluid medium.

Tap water in Japan free from foreign substances or contamination can be used. Carry out the evaluation under an actual operating condition for using other kind of water.

Be sure to place Insert Ring (WR) into the tube edge when using water or liquid as a fluid medium.

The specification above may not be applied, depending on the kind of chemicals or mixed gases used as fluid medium. Make sure to use PISCO products after verifying their suitability on the user side.

Port size

Tube dia.

mm size(mm) φ4, φ6, φ8, φ10, φ12, φ16

Thread size

Metric male thread M5x0.8
Taper pipe male thread R1/8, R1/4, R3/8, R1/2


Type & Price list

Thread & Tube connection (4 types)

Tube & Tube connection (6 types)

Detailed Safety Instructions


1.Check chemical resistance before using the products, when the fluid medium is chemicals, solvent or mixed gases. Depending on the conditions, it may cause damage to the products, the escape of tubes, and a fluid leakage.

2.When the fluid medium is water or liquid, do not use fittings unless the operating environment meets all the described specifications in the catalog. Otherwise, it may cause damage to the products, the escape of tubes and a fluid leakage.

3.Be sure to place Insert Ring into the tube edge under following usage conditions: 1) where fluid medium temperature or operating temperature varies sharply. 2) where the product is used under high temperature. Otherwise it may cause the escape of tubes and a fluid leakage.


1.Taper thread is not coated with Sealock. When coating the thread with seal tape or sealant, do not coat 1.5 to 2 screw ridges from the tip of the thread.

2.The level of corrosion and dust emission from the fittings varies by operating conditions. In case there is a possibility of negative effects on machines or facilities due to these conditions, evaluate the suitability of the products in advance.

Inquiries about this product

It is also possible to suggest products suitable for various conditions such as applications and functions. Please feel free to contact us or visit the nearest sales office.

The following are frequently asked questions. Please check before making inquiries.