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Superlok Compression Tube Fittings


Technical Specs

Primary Connection Range:
1/8" - 1" Fractional Tube
Secondary Connection Range:
1/8" - 1" FNPT
Alt Primary Connection Range:
3mm - 25mm Metric Tube
Alt Secondary Connection Range:
1/8" - 1" Female ISO Taper (BSPT)
Pressure Rating:
Body Material:
No items found.
Port Size:
Orifice Size:
Seal Type:
Double Ferrule
Seal Material:
316L Stainless
Seat Material:


Superlok Female Connectors connect tubing to male tapered threads and feature Superlok i-Fitting technology on all fitting between a 1/4" and 1".

Superlok i-Fitting tube fittings and valves are manufactured with the industry's only built-in gap gauge. During installation, the compression nut is simply tightened until the gap gauge rings pop off. When the gap gauge rings pop, it signals the installer to stop. This is the point of perfect compression and seal, which provides an added level of safety and accuracy for companies worldwide. For more information and installation instructions, check out our article and video.

Superlok brings the only game changer to the tube/compression fitting and valve market. This patented innovation ends leaks that are caused by improper tightening procedures, and from the failure to check the installation with a gap gauge, which all manufacturers require. The new, leak-free technology is so precise, that Superlok extends a lifetime warranty on all tube fittings and valves. If you want it done right the first time, get Superlok!

Contact MAKO Products to inquire about pricing or place an order.


*Connects Fractional Tubes to Male NPT Thread

Available tube sizes:
  • 1/8"
  • 3/16"
  • 1/4"
  • 5/16"
  • 3/8"
  • 1/2"
  • 5/8"
  • 3/4"
  • 7/8"
  • 1"
  • 3mm
  • 4mm
  • 6mm
  • 8mm
  • 10mm
  • 12mm
  • 15mm
  • 16mm
  • 20mm
  • 22mm
  • 25mm
Available thread sizes:
  • 1/8"
  • 1/4"
  • 3/8"
  • 1/2"
  • 3/4"
  • 1"

Contact Mako Products to inquire about pricing or place an order.

Cross Brand Part Number Look-Up

Size Superlok Swagelok Parker Hylok DK-LOK Hamlet Tylok Brennan Hoke SSP
1/8"T X 1/8"NPT SFC-2-2N SS-200-7-2 2FSC2N-316 CFC2-2N-S316 DCF2-2N-S 766L_1/8 X 1/8 SS-2-DFC-2 N2405-02-02-SS 2CF2316 ISSD2FC2
1/8"T X 1/4"NPT SFC-2-4N SS-200-7-4 2FSC4N-316 CFC2-4N-S316 DCF2-4N-S 766L _ 1/8 X 1/4 SS-2-DFC-4 N2405-02-04-SS 2CF4316 ISSD2FC4
3/16"T X 1/8"NPT SFC-3-2N SS-300-7-2 3FSC2N-316 CFC3-2N-S316 DCF3-2N-S 766L_3/16 X 1/8 SS-3-DFC-2 N2405-03-02-SS 3CF2316 ISSD3FC2
1/4"T X 1/8"NPT SFCI-4-2N SS-400-7-2 4FSC2N-316 CFC4-2N-S316 DCF4-2N-S 766L _ 1/4 X 1/8 SS-4-DFC-2 N2405-04-02-SS 4CF2316 ISSD4FC2
1/4"T X 1/4"NPT SFCI-4-4N SS-400-7-4 4FSC4N-316 CFC4-4N-S316 DCF4-4N-S 766L _ 1/4 X 1/4 SS-4-DFC-4 N2405-04-04-SS 4CF4316 ISSD4FC4
1/4"T X 3/8"NPT SFCI-4-6N SS-400-7-6 4FSC6N-316 CFC4-6N-S316 DCF4-6N-S 766L _ 1/4 X 3/8 SS-4-DFC-6 N2405-04-06-SS 4CF6316 ISSD4FC6
1/4"T X 1/2"NPT SFCI-4-8N SS-400-7-8 4FSC8N-316 CFC-4-8N-S316 DCF4-8N-S 766L _ 1/4 X 1/2 SS-4-DFC-8 N2405-04-08-SS 4CF8316 ISSD4FC8
1/4"T X 3/4"NPT SFCI-4-12N SS-400-7-12 4FSC12N-316 CFC4-12N-S316 DCF4-12N-S 766L _ 1/4 X 3/4 SS-4-DFC-12 N2405-04-12-SS 4CF12316 ISSD4FC12
1/4"T X 1/8"NPT SFCI-4-2N SS-400-7-2 4FSC2N-316 CFC-4-2N-S316 DCF4-2N-S 766L _ 1/4 X 1/8 SS-4-DFC-2 N2405-04-02-SS 4CF2316 ISSD4FC2
5/16"T X 1/4"NPT SFCI-5-4N SS-500-7-4 5FSC4N-316 CFC5-4N-S316 DCF5-4N-S 766L_5/16 X 1/4 SS-5-DFC-4 N2405-05-04-SS 5CF4316 ISSD5FC4
3/8"T X 1/8"NPT SFCI-6-2N SS-600-7-2 6FSC2N-316 CFC6-2N-S316 DCF6-2N-S 766L _ 3/8 X 1/8 SS-6-DFC-2 N2405-06-02-SS 6CF2316 ISSD6FC2
3/8"T X 1/4"NPT SFCI-6-4N SS-600-7-4 6FSC4N-316 CFC6-4N-S316 DCF6-4N-S 766L _ 3/8 X 1/4 SS-6-DFC-4 N2405-06-04-SS 6CF4316 ISSD6FC4
3/8"T X 3/8"NPT SFCI-6-6N SS-600-7-6 6FSC6N-316 CFC6-6N-S316 DCF6-6N-S 766L _ 3/8 X 3/8 SS-6-DFC-6 N2405-06-06-SS 6CF6316 ISSD6FC6
3/8"T X 1/2"NPT SFCI-6-8N SS-600-7-8 6FSC8N-316 CFC6-8N-S316 DCF-6-8N-S 766L _ 3/8 X 1/2 SS-6-DFC-8 N2405-06-08-SS 6CF8316 ISSD6FC8
3/8"T X 3/4"NPT SFCI-6-12N SS-600-7-12 6FSC12N-316 CFC6-12N-S316 DCF6-12N-S 766L _ 3/8 X 3/4 SS-6-DFC-12 N2405-06-12-SS 6CF12316 ISSD6FC12
1/2"T X 1/4"NPT SFCI-8-4N SS-810-7-4 8FSC4N-316 CFC8-4N-S316 DCF8-4N-S 766L _ 1/2 X 1/4 SS-8-DFC-4 N2405-08-04-SS 8CF4316 ISSD8FC4
1/2"T X 3/8"NPT SFCI-8-6N SS-810-7-6 8FSC6N-316 CFC8-6N-S316 DCF8-6N-S 766L _ 1/2 X 3/8 SS-8-DFC-6 N2405-08-06-SS 8CF6316 ISSD8FC6
1/2"T X 1/2"NPT SFCI-8-8N SS-810-7-8 8FSC8N-316 CFC8-8N-S316 DCF8-8N-S 766L _ 1/2 X 1/2 SS-8-DFC-8 N2405-08-08-SS 8CF8316 ISSD8FC8
1/2"T X 3/4" SFCI-8-12N SS-810-7-12 8FSC12N-316 CFC8-12N-S316 DCF8-12N-S 766L _ 1/2 X 3/4 SS-8-DFC-12 N2405-08-12-SS 8CF12316 ISSD8FC12
1/2"T X 1"NPT SFCI-8-16N SS-810-7-16 8FSC16N-316 CFC8-16N-S316 DCF8-16N-S 766L _ 1/2 X 1 SS-8-DFC-16 N2405-08-16-SS 8CF16316 ISSD8FC16
5/8"T X 3/8"NPT SFCI-10-6N SS-1010-7-6 10FSC6N-316 CFC10-6N-S316 DCF10-6N-S 766L _ 5/8 X 3/8 SS-10-DFC-6 N2405-10-06-SS 10CF6316 ISSD10FC6
5/8"T X 1/2"NPT SFCI-10-8N SS-1010-7-8 10FSC8N-316 CFC10-8N-S316 DCF10-8N-S 766L _ 5/8 X 1/2 SS-10-DFC-8 N2405-10-08-SS 10CF8316 ISSD10FC8
5/8"T X 3/4"NPT SFCI-10-82N SS-1010-1-12 10FSC12N-316 CFC10-12N-S316 DCF10-12N-S 766L_5/8 X 3/4 SS-10-DFC-12 N2405-10-12-SS 10CF12316 ISSD10FC12
3/4"T X 3/8"NPT SFCI-12-6N SS-1210-7-6 12FSC6N-316 CFC12-6N-S316 DCF12-6N-S 766L_3/4 X 3/8 SS-12-DFC-6 N2405-12-06-SS 12CF6316 ISSD12FC6
3/4"T X 1/2"NPT SFCI-12-8N SS-1210-7-8 12FSC8N-316 CFC12-8N-S316 DCF12-8N-S 766L _ 3/4 X 1/2 SS-12-DFC-8 N2405-12-08-SS 12CF8316 ISSD12FC8
3/4"T X 3/4"NPT SFCI-12-12N SS-1210-7-12 12FSC12N-316 CFC12-12N-S316 DCF12-12N-S 766L _ 3/4 X 3/4 SS-12-DFC-12 N2405-12-12-SS 12CF12316 ISSD12FC12
3/4"T X 1"NPT SFCI-12-16N SS-1210-7-16 12FSC16N-316 CFC12-16N-S316 DCF12-16N-S 766L _ 3/4 X 1 SS-12-DFC-16 N2405-12-16-SS 12CF16316 ISSD12FC16
7/8"T X 3/4"NPT SFCI-14-12N SS-1410-7-12 14FSC12N-316 CFC14-12N-S316 DCF14-12N-S 766L_7/8 X 3/4 SS-14-DFC-12 N2405-14-12-SS 14CF12316 ISSD14FC12
1"T X 3/8"NPT SFCI-16-6N SS-1610-7-6 16FSC6N-316 CFC16-6N-S316 DCF16-6N-S 766L_1 X 3/8 SS-16-DFC-6 N2405-16-06-SS 16CF6316 ISSD16FC6
1"T X 1/2"NPT SFCI-16-8N SS-1610-7-8 16FSC8N-316 CFC16-8N-S316 DCF16-8N-S 766L _ 1 X 1/2 SS-16-DFC-8 N2405-16-08-SS 16CF8316 ISSD16FC8
1"T X 3/4"NPT SFCI-16-12N SS-1610-7-12 16FSC12N-316 CFC16-12N-S316 DCF16-12N-S 766L _ 1 X 3/4 SS-16-DFC-12 N2405-16-12-SS 16CF12316 ISSD16FC12
1"T X 1"NPT SFCI-16-16N SS-1610-7-16 16FSC16N-316 CFC16-16N-S316 DCF16-16N-S 766L _ 1 X 1 SS-16-DFC-16 N2405-16-16-SS 16CF16316 ISSD16FC16
1-1/4"T X 1-1/4"NPT SFCI-20-20N SS-2000-7-20 20FSC20N-316 CFC20-20N-S316 DCF20-20N-S 766L_1 1/4 X 1 1/4 SS-20-DFC-20 N2405-20-20-SS 20CF20316 ISSD20FC20
1-1/2"T X 1-1/2"NPT SFCI-24-24N SS-2400-7-24 24FSC24N-316 CFC24-24N-S316 DCF24-24N-S 766L_1 1/2 x 1 1/2 SS-24-DFC-24 N2405-24-24-SS 24CF24316 ISSD24FC24
2"T X 2"NPT SFCI-32-32N SS-3200-7-32 32FSC32N-316 CFC32-32N-S316 DCF32-32N-S 766L_2 X 2 SS-32-DFC-32 N2405-32-32-SS 32CF32316 ISSD32FC32

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