Shop Superlok SU Stainless Straight Tube Unions
The Superlok Series SU fractional tube unions, made from high-quality 316 stainless steel, are reliable and durable connectors designed to join two sections of hydraulic tubing or pipe in high-pressure systems. These unions provide a leak-proof connection, ensuring secure and efficient fluid transfer. Crafted from 316 stainless steel, they offer excellent corrosion resistance, making them ideal for demanding applications in industries such as oil and gas, chemical processing, and aerospace. With their precision engineering and robust construction, Superlok Series SU tube unions are the preferred choice for professionals seeking long-lasting, efficient solutions for their hydraulic systems.
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Straight Instrumentation TUBE - TUBE Union
1/16" to 2" Nominal Tube OD
Stainless Steel
Click HERE to view the Superlok Tube Adapters Catalog
Click HERE to view the entire SU Straight Stainless Steel Fractional TUBE-TUBE Selection
Click HERE to view the entire SU-M Straight Stainless Steel Metric TUBE-TUBE Selection




Shop Superlok SU Stainless Straight Tube Unions
Click on the model number in the chart below to view that adapter.
Fractional Tube Unions
| Product SKU ▼ | Brand ▼ | Material ▼ | Nominal Tube OD ▼ | Nominal Tube OD ▼ | Lead Time ▼ | Price ▼ |
|---|---|---|---|---|---|---|
| SU-1-S316 | Superlok | 316 Stainless Steel | 0.0625 (1/16") | 0.0625 (1/16") | 1-2 Weeks | $12.99 |
| SU-2-S316 | Superlok | 316 Stainless Steel | 0.125 (1/8") | 0.125 (1/8") | 1-2 Weeks | $9.99 |
| SU-3-S316 | Superlok | 316 Stainless Steel | 0.1875 (3/16") | 0.1875 (3/16") | 1-2 Weeks | $9.99 |
| SU-4-S316 | Superlok | 316 Stainless Steel | 0.25 (1/4") | 0.25 (1/4") | 1-2 Weeks | $9.99 |
| SU-5-S316 | Superlok | 316 Stainless Steel | 0.3125 (5/16") | 0.3125 (5/16") | 1-2 Weeks | $10.78 |
| SU-6-S316 | Superlok | 316 Stainless Steel | 0.375 (3/8") | 0.375 (3/8") | 1-2 Weeks | $13.09 |
| SU-8-S316 | Superlok | 316 Stainless Steel | 0.5 (1/2") | 0.5 (1/2") | Same Day | $18.15 |
| SU-10-S316 | Superlok | 316 Stainless Steel | 0.625 (5/8") | 0.625 (5/8") | 1-2 Weeks | $26.62 |
| SU-12-S316 | Superlok | 316 Stainless Steel | 0.75 (3/4") | 0.75 (3/4") | 1-2 Weeks | $28.99 |
| SU-14-S316 | Superlok | 316 Stainless Steel | 0.875 (7/8") | 0.875 (7/8") | 1-2 Weeks | $44.99 |
| SU-16-S316 | Superlok | 316 Stainless Steel | 1" | 1" | 1-2 Weeks | $50.99 |
| SU-20-S316 | Superlok | 316 Stainless Steel | 1.25 (1-1/4") | 1.25 (1-1/4") | 1-2 Weeks | $103.99 |
| SU-24-S316 | Superlok | 316 Stainless Steel | 1.5 (1-1/2") | 1.5 (1-1/2") | 1-2 Weeks | $164.99 |
| SU-32-S316 | Superlok | 316 Stainless Steel | 2" | 2" | 1-2 Weeks | $270.99 |
Showing all products
Metric Tube Unions
| Product SKU ▼ | Brand ▼ | Material ▼ | Nominal Tube OD ▼ | Nominal Tube OD ▼ | Lead Time ▼ | Price ▼ |
|---|---|---|---|---|---|---|
| SU-6M-S316 | Superlok | 316 Stainless Steel | 6mm | 6mm | 1-2 Weeks | $10.99 |
| SU-8M-S316 | Superlok | 316 Stainless Steel | 8mm | 8mm | 1-2 Weeks | $11.99 |
| SU-10M-S316 | Superlok | 316 Stainless Steel | 10mm | 10mm | 1-2 Weeks | $15.85 |
| SU-12M-S316 | Superlok | 316 Stainless Steel | 12mm | 12mm | 1-2 Weeks | $21.99 |
Showing all products




See the chart below for additional Dimensional Detail & Pressure Ratings


Still need help? Give us a call at 281.941.2310 or email us at sales@onehydraulics.com for technical support.










