compression fittings are used for tube connections. These tube fittings are also called double ferrule fittings or instrumentation fittings. They
Swagelok Tube Fitting, 1/2 TO 3/8 in Reducing Union, Stainless Steel, Gaugeable, 1 ea., PN: SS-810-6-6
Use this 0.010 ID union to join two pieces of tubing - one with 1/16 OD and one with 1/32 OD. Each union comes with two fittings and two ferrules.
Stainless Steel Reducing Union with 0.010 ID for 1/16 OD and 1/32 OD Tubing
Valco reducing unions
JACO Reducing Union Connector, 5/8 Tube x 1/2 MPT, Polypropylene
5) HAM-LET 1/2 x 3/8 SS Compression Reducing Union QV8-TUV.A.359-12
PI201208S, John Guest Reducing Union
SS Reducing Union at Rs 300/piece, Stainless Steel Union in Mumbai
Boshart® 5/8 O.D. x 3/8 O.D. Reducing Union - Compression Fit - #BC-62R-1006
RU-6-5-SF, Reducing Union, Single Ferrule
Conek Pneumatic Inch Tube Air Fittings - Reducing Union Push In Fittings
5/8OD X 3/8OD Brass Compression Reducing Unions — COPPERTUBINGSALES
Nai-Lok Instrument High Pressure Swagelok Type 14mm Double Ferrule
Bulkhead Reducing Union, Bulkhead Reducing Union Supplier, Bulkhead Reducing Union Fitting, Bulkhead Reducing Union Tube Fitting
Swagelok Fitting, 1/4
1- Swagelok Stainless Steel Reducing Union, 1/8 Tube x 1/16 Tube