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Straight Union - Stainless Steel Compression Fitting for plastic and metal tubings.

Metric and Imperial sizes available (see Size Chart). Our fittings are compatible with other brands such as Swagelok and Parker. Please see our catalog for other types of fittings.
Specifications
Body Material 316 Stainless Steel
Nut (NTC) is Silver Plated
Back Ferrule (BFC) is surface hardened
Operating Temperature -425°F to 600°F (-253°C to 315°C)
Compatibility Swagelok®, Parker A-Lok, Let-Lock, Yor-Lock
Service Steam, Air, Water
Oil, Gasoline, Natural Gas
Most solvents and acids that are compatible with 316SS
Pressure
Tube (OD) Maximum Pressure (PSI at 72°F)
1/16" 10,000
1/8" 2mm 8,800
3/16" 4mm 5,500
1/4" 6mm 4,200
5/16" 8mm 3,300
3/8" 10mm 2,800
1/2" 12mm 2,500
5/8" 16mm 2,300
3/4" 18mm 2,100
1" 20mm 1,900
Strength Testing
In the strength test, STC Fittings out performed Tubes, where Tubes failed before STC Fittings when pressures were raised beyond the recommended Maximum Pressure.
Dimensions
Tube Size (OD) Part No. A B C D E F G
1/16"SUC 1/16 25.117.58.6101011.59
1/8"SUC 1/8 35.622.412.7101023.18
3/16"SUC 3/16 37.324.113.7121234.76
1/4"SUC 1/4 40.926.215.2121446.35
5/16"SUC 5/16 43.228.216.2141767.94
3/8"SUC 3/8 45.030.216.8171779.53
1/2"SUC 1/2 51.331.022.922221012.7
5/8"SUC 5/8 52.131.024.424271215.9
3/4"SUC 3/4 53.633.324.427301519.1
1"SUC 1 64.840.431.235382125.4
Tube Size (OD) Part No. A B C D E F G
4mmSUC 4 37.324.113.7121234
6mmSUC 6 41.026.215.3121446
8mmSUC 8 43.228.216.2141768
10mmSUC 10 46.231.017.21919810
12mmSUC 12 51.231.022.822221012
Dimensions for Reference Use Only: Imperial fittings in mm, Metric fittings in mm, U.S.O.

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Information contained herein may be changed without prior notification.