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Compression

Buy the best laboratory compression products at USALab.com! Our high-quality products are perfect for any lab setting from our compression gauges to caps. Order now and experience the benefits.

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  • USA Lab Glycerin Compound Compression Gauge- 1/2" Tube Stub

    USA Lab Glycerin Compound Compression Gauge- 1/2" Tube Stub

    USA Lab
    C-GAUGEBOT-
    $21.99 - $39.99
    The USA Lab Glycerin Filled Compound Gauge is available with either a 1/4" or 1/2" stainless steel compression connection and features a readout range of -30 to 300 PSI.    For Technical Support, Questions, or Other Issues Please Email or Call...
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  • Superlok Compression Street Tee - SMRT

    Superlok Compression Street Tee - SMRT

    Superlok
    $38.00 - $68.00
    Superlok Tube Fittings are produced under strict quality control using the highest quality raw materials. Positive material identification (PMI), rigorous testing and quality assurance procedures are the foundation of the Superlok brand. Superlok Tube...
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  • Superlok 1/2 inch Tube x 1/2 inch Male NPT Connector, Bored-Through — SMC-TM Stainless Compression Fitting Superlok 1/2" O.D. Tube X 1/2" Male NPT Connector, Bored Through - SMC-TM

    Superlok 1/2" O.D. Tube X 1/2" Male NPT Connector, Bored Through - SMC-TM

    Superlok
    SMC-8-8-TM
    $35.00
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  • USALOK Compression Female Union Cross

    USALOK Compression Female Union Cross

    USALOK
    CUC
    $35.00 - $58.00
    USALOK made and contains of all 316 SS components. USALOK is one of the most reliable and affordable compression fittings on the market!       For Technical Support, Questions, or Other Issues Please Email or Call...
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  • Superlok 1/2" HB X 3/8" TUBE STUB

    Superlok 1/2" HB X 3/8" TUBE STUB

    Superlok
    $30.00 - $42.00
    Superlok Tube Fittings are produced under strict quality control using the highest quality raw materials. Positive material identification (PMI), rigorous testing and quality assurance procedures are the foundation of the Superlok brand. Superlok Stub...
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  • Superlok Compression O.D. Tube Union Tee SUT

    Superlok Compression O.D. Tube Union Tee SUT

    Superlok
    SUT
    $29.00 - $100.00
    Superlok Tube Fittings are produced under strict quality control using the highest quality raw materials. Positive material identification (PMI), rigorous testing and quality assurance procedures are the foundation of the Superlok brand. Superlok Tube...
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  • USALOK 1" STAINLESS STEEL 304 SEAMLESS TUBING 1,2,4 & 6'

    USALOK 1" STAINLESS STEEL 304 SEAMLESS TUBING 1,2,4 & 6'

    USALOK
    CTB-1-F
    $28.00 - $105.00
    Introducing our 304 stainless steel seamless tubing, a reliable solution for a wide range of applications. Made from high-grade stainless steel, this tubing offers exceptional corrosion resistance and durability. With its seamless construction, you can...
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  • USALOK Compression Reducing Tee

    USALOK Compression Reducing Tee

    USALOK
    CRUT
    $28.00 - $35.00
    USALOK made and contains of all 316L SS Compression Reducing Tee components. USALOK is one of the most reliable and affordable compression fittings on the market!     For Technical Support, Questions, or Other Issues Please Email or Call...
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  • Superlok Reducing Union - SRU  - Various Sizes - 1/4", 3/8", 1/2"

    Superlok Reducing Union - SRU - Various Sizes - 1/4", 3/8", 1/2"

    Superlok
    $25.00 - $40.00
    Superlok USA Tube Fittings are produced under strict quality control using the highest quality raw materials. Positive material identification (PMI), rigorous testing and quality assurance procedures are the foundation of the Superlok brand. Superlok...
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  • USA Lab Flat Lid w/ 1/2" Compression Superlok - 1.5", 2", 3", 4"

    USA Lab Flat Lid w/ 1/2" Compression Superlok - 1.5", 2", 3", 4"

    USA Lab
    FR-SL
    $45.00 - $59.00
    Our USA Lab Flat 304 ss Tri-Clamp Reducer / Lid comes with a .5" bore Superlok compression fitting welded on to the lid to provide superior quality at an affordable price. The Superlok fitting of the 4" reducer allows ease of adding dip tubes or...
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  • USALOK Compression Street Tee

    USALOK Compression Street Tee

    USALOK
    CMRT
    $23.00 - $39.00
    USALOK made and contains of all 316L SS components. USALOK is one of the most reliable and affordable compression fittings on the market!   For Technical Support, Questions, or Other Issues Please Email or Call Us!    
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  • USALOK  Compression Street Tee

    USALOK Compression Street Tee

    USALOK
    CMBT
    $23.00 - $39.00
    USALOK 1 4 compression street tee made and contains of all 316L SS components. USALOK is one of the most reliable and affordable compression fittings on the market!     For Technical Support, Questions, or Other Issues Please Email or Call...
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Compression Fittings From USA Lab

Leak-Free Stainless Steel Compression Fittings and Components

Compression fittings make it easy to build tight, reliable connections without welding or threading. At USA Lab, you'll find everything you need to assemble and maintain your system: from classic unions and tees to PTFE-lined hoses, valves, gauges, lids, and stainless tubing.

These products are built for:

  • Extraction labs running solvent transfer and pressurized systems.
  • Brewing operations requiring sanitary, corrosion-resistant parts.
  • Research labs monitoring pressure with gauges and relief valves.
  • Industrial plants relying on high-strength stainless steel tubing and fittings.

Complete Connection Solutions for Your Lab, Reactor, or Processing System

316/316L Stainless Steel

Made from high-grade stainless steel that resists corrosion, solvents, and high pressure, these components are built for long-term durability in lab and industrial environments.

Full System Coverage

Find everything you need in one place: fittings, valves, gauges, hoses, lids, tubing, ferrules, and nuts.

Flow and Pressure Control

Keep operations safe and efficient with valves for precise on/off flow and adjustable inline relief valves that protect your setup from overpressure.

Compare Stainless Steel Compression Products

Core fitting compression products (like valves and gauges) provide the parts needed to build and maintain reliable systems. Hoses and lids add flexibility, while small parts (like ferrules, nuts, and plugs) keep everything sealed and running leak-free.

Group Brands Sizes / Range
Safety & Control Valves Superlok Relief valves: 10–250 PSI set range (300 PSI body); ball valves: ¼"–¾"
Compression Hoses USA Lab Hose lengths: 12"–144" (model-dependent)
Lids & Reducers USA Lab Superlok Tri-clamp sizes: 1.5"–12" (model-dependent)
Core Fittings Superlok

USALOK
Common sizes: ¼", ⅜", ½" (plus select 1")
Adapters & Connectors Superlok

USALOK
Adapter sizes: ¼", ⅜", ½" (plus select 1")
Gauges USA Lab Pressure ranges: -30 to 300 PSI
Tubing USALOK Tube sizes: ¼"–1"
Small Parts Superlok

USALOK
Component sizes: ¼", ⅜", ½"

Easy Operation and Flexibility

  • Quick setup — Hand-tighten or use basic tools. No welding or threading needed.
  • Reusable components — Disconnect and reassemble without losing seal strength.
  • Custom fit builds — Mix reducers, adapters, and tubing for any system layout.

Match the Right Compression Product to Your Lab

  • Need overpressure protection? → Install a Superlok inline relief valve.
  • Controlling flow at high pressure? → Choose a 210 Series ball valve.
  • Running solvents between vessels? → Use PTFE-lined stainless hoses in ½" or ¾".
  • Monitoring vacuum or pressure? → Select a compound or glycerin gauge with the right range.
  • Building reactor lids or reducers? → Pick a flat or hemispherical lid with ½" compression ports.
  • Connecting unlike standards? → Go with OD-to-NPT, OD-to-MJIC, or barb adapters.
  • Core plumbing work? → Start with Superlok/USALOK unions, tees, elbows, and crosses.

Why Choose USA Lab Stainless Steel Compression Products

  1. Huge selection from trusted brands Superlok and USALOK.
  2. Coverage for every need: fittings, valves, hoses, lids, gauges, and tubing.
  3. U.S.-based support and fast shipping from our warehouse.

Equipment That Works With Your Compression Setup

Pair your compression fittings with related USA Lab gear for a complete solution: