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Precision manufacturing. Stronger together.Manufacturing Services & Support

From prototype to production, coordinated manufacturing solutions for your custom parts.

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Solutions

Thermal Technologies

Choose air- or liquid-cooling components around your thermal and mechanical requirements.

Stepped aluminum heat sink with copper contact insert — illustrative concept
Explore Thermal Technologies

Heat Sinks

Liquid Cooling

AI & Data Center Cooling

Manufacturing support for your cold plates, manifolds and cooling assemblies.

Processor cold plates and distribution manifold — illustrative concept
Explore AI Cooling

AI Compute Cooling

Distribution & Assembly

AI Cooling Interfaces
  1. Cold PlateHeat-source interface
  2. ManifoldCoolant distribution
  3. CDU InterfaceConnection requirements
  4. Rack / LoopAssembly integration
Review component fit across your cooling system.

Industry Cooling Solutions

Find components for your power electronics, energy, laser and telecom application.

Machined power module cooling plate — illustrative concept
Explore Industry Cooling

Power Electronics

EV & Energy

Laser & Telecom

Industries

High-Tech & Electronics

Components for your electronic systems.

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Applications & Project Inquiries

Precision & Advanced Systems

Start with your functional and quality requirements.

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Applications & Project Inquiries

Industrial & Energy

Build around your operating environment.

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Applications & Project Inquiries

Materials

From prototype to production, review material performance, manufacturability and cost for your part.

Engineering Plastics

Match your polymer to function, process and environment.

→
ABS — illustrative material conceptABSReview enclosure and molding needs›Polycarbonate (PC) — illustrative material conceptPolycarbonate (PC)Discuss clarity and impact needs›Nylon (PA) — illustrative material conceptNylon (PA)Review moisture and wear conditions›POM / Acetal — illustrative material conceptPOM / AcetalReview fit and sliding features›PEEK — illustrative material conceptPEEKDiscuss operating conditions›PTFE — illustrative material conceptPTFEReview friction and chemical exposure›ULTEM / PEI — illustrative material conceptULTEM / PEIDiscuss thermal and electrical needs›

Elastomers & Specialty Materials

Confirm grade availability and application requirements.

→
Elastomers
Silicone / LSR — illustrative material conceptSilicone / LSRDiscuss flexible component needs›TPU / TPE — illustrative material conceptTPU / TPEReview flexibility and processing›EPDM — illustrative material conceptEPDMReview weathering and chemical exposure.›NBR — illustrative material conceptNBRReview oil and fuel exposure.›FKM — illustrative material conceptFKMReview temperature and chemical exposure.›
Specialty Materials
G10 / FR4 — illustrative material conceptG10 / FR4Review insulation and laminate needs›Composites — illustrative material conceptCompositesReview stiffness, weight and laminate.›Customer-Specified MaterialsConfirm your grade and requirements.›Other Specialty MaterialsDiscuss your application and grade.›
Resources

Design & Engineering

Practical guidance for your part geometry and material decisions.

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Cost & Planning

Prepare your process, budget and sourcing questions.

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Learn & Proof

Build your knowledge before production.

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About Us

About LK MFG

Learn who we are and how we operate.

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Get in Touch

Find our U.S. support team or start a conversation.

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sales@lkmfg.com (945) 409-1013

1750 Briercroft Ct, Suite 204
Carrollton, TX 75006, USA

YOUR INTERFACES · YOUR CONDITIONS · YOUR ACCEPTANCE

Cooling Loops & Assemblies
for Your Hose Routing, Connections & Delivered Test State

For your cooling loops and assemblies, list the cold plates, manifolds, machined interfaces, selected hoses and fittings included in the order. Review routing, service access, wetted materials, cleanliness and the delivered assembly checks before release.

Illustrative cooling loops & assemblies assembly concept, not a customer part

Illustrative component concept

Drawing

Critical geometry & interfaces

Materials

Grades, condition & compatibility

Interfaces

Defined route & final state

Evidence

Agreed methods & records

Start with Your BOM and Installed Routing

Define supplied components, selected hoses and fittings, routing, service access and acceptance.

  • List supplied parts and purchased items
  • Review installed lengths, bends and restraints
  • Specify connections and wetted materials
  • Agree component and platform acceptance separately
  • Confirm the sample and acceptance evidence
Illustrative bill of materials and boundary concept, not documentary company or customer photography

Bill of materials and boundary

Your liquid cooling loop assembly quote should name supplied part numbers, revisions, quantities, purchased hoses and fittings, seals, brackets and the final assembled state. Identify anything provided by your system integrator.

Illustrative routing and service access concept, not documentary company or customer photography

Routing and service access

Define cooling loop hose routing requirements using the selected hose specification, approved bend radius, installed length, restraint, tool access and removal sequence. Review nearby edges, keep-outs and connector operation in the actual assembly.

Illustrative coolant and wetted materials concept, not documentary company or customer photography

Coolant and wetted materials

Review cooling loop material compatibility against the actual coolant formulation, concentration, operating temperatures, connected metals, coatings, seals and selected hose materials. Include cleaning and preservation chemicals where relevant.

Illustrative controlled assembly information concept, not documentary company or customer photography

Controlled assembly information

Your cooling loop assembly drawing requirements should include the released routing layout, connection schedule, BOM, hose and fitting specifications, final condition and acceptance records. A liquid cooling loop prototype assembly should resolve installation and service interfaces before repeat supply.

Illustrative engineering concepts

Define 4 Scopes for Your Cooling Loop Order

Build the quotation around the actual supplied parts and assembly state. Pumps, controls and complete-system validation need a separately defined agreement.

Illustrative engineering concepts

Build Your Defined Loop from a Controlled Bill of Materials

BOM + ROUTING + CONNECTIONS↓COMPONENTS & CONNECTIONS↓SAMPLE & AGREED CHECKS↓APPROVED FINISHED PART

A custom liquid cooling loop assembly needs a controlled bill of materials and the actual installed geometry. Cooling loop component manufacturing and cooling loop interface machining cover the released parts and final mating features. Your cooling loop manifold assembly should identify selected fittings, seals, hoses, brackets and supplied records; pumps, controls and complete-system validation require a separate defined scope.

  • Define the supplied parts, material and connection boundary.
  • Review your critical interfaces in their final production state.
  • Agree sample evidence before repeat-order release.
Compare thermal technology routes →

Compare Your Wetted Material References

Choose material with your coolant, connected metals, seals, mass and manufacturing route in view. These stock references do not establish corrosion compatibility, a pressure rating or manifold flow performance.

Thermal conductivity reference

6061-T6 · 25°C167 W/(m·K)
304 / 1.4301 · 20°C15 W/(m·K)
316L / 1.4404 · 20°C15 W/(m·K)

Bulk conductivity does not establish the hydraulic or thermal performance of your assembled loop.

Density reference

6061 aluminum2.7 g/cm³
304 stainless steel7.9 g/cm³
316L stainless steel8.0 g/cm³

Estimate mass using your finished volume. Confirm exact grade, product specification and required condition with the purchasing documents.

6061 selected composition limits · weight %
Grade / European referenceSiFeCuMnMgZnAl
6061 · EN AW-6061 · AlMg1SiCu0.40–0.80≤0.700.15–0.40≤0.150.80–1.20≤0.25Balance

6061 additional selected limits: Cr 0.04–0.35%, Ti ≤0.15%; other elements ≤0.05% each / ≤0.15% total. Hydro reference, not a finished loop-component certificate.

Stainless steel selected typical composition · weight %, not specification limits
Reference gradeEuropean identifierUNSCCrNiMo
304EN 1.4301S304000.0418.18.1—
316LEN 1.4404S316030.0217.210.12.1

Outokumpu Core/Supra Table 1 typical composition and Table 7 physical references. Dash means not listed in the selected summary, not zero. European identifiers aid drawing review; substitutions and final purchasing limits require approval.

Sources: Hydro 6061 → · Outokumpu Core 304 → · Outokumpu Supra 316L →

3 Views Before Your Loop Assembly Release

Review series-loss bookkeeping, the tested configuration and performance ownership. The numeric example is chosen arithmetic, not a test report, pump recommendation or operating rating.

1 · Chosen series-loss sum

Chosen adapter loss2 kPa
Chosen hose loss3 kPa
Chosen component loss5 kPa
Sum along chosen series path10 kPa

Chosen example at one common flow: 2 + 3 + 5 = 10 kPa across these series elements. The values are illustrative inputs, not measured parts or recommended limits. Actual losses depend on fluid, temperature, geometry and flow; parallel branches require their own network analysis.

2 · Name the delivered test state

CONTROLLED BOM + ROUTING REVISION↓INSTALLED HOSES + FITTINGS + SEALS↓AGREED LEAK / PRESSURE RECORDS

Record which plugs, fittings, seals and hoses are installed during each specified check. Define the medium, conditions, limits and report separately for leak and pressure acceptance.

3 · Assign performance validation

SUPPLIED COMPONENT LOOP ACCEPTANCE↓SYSTEM FLOW + PUMP + CONTROL REVIEW↓THERMAL TEST + APPROVAL OWNER

Agree the actual flow and thermal test configuration and responsible team. A component dimensional report or leak check does not establish complete-system performance.

Review Your Surface and Cleanliness Requirements

Separate mounting datums, sealing interfaces and wetted passages. Confirm the specified final condition with the mating assembly.

Illustrative solid exterior mounting datum face on a loop adapter concept, not documentary company or customer photography

Define your mounting datums, machining allowance and final inspection state.

A finish is not a universal cooling improvement. Confirm its purpose, compatibility and inspection state. Review surface finishing options →

Illustrative engineering concepts

Define Your Functional Features

Put the dimensions that control sealing, installed fit and connection access on your drawing.

Illustrative sectioned cooling-loop adapter bore, seal land and support concept, not documentary company or customer photography

Illustrative loop adapter section concept

Mounting footprint

Datum scheme, installed position and mechanical restraint

Ports and seals

Thread designation, seal land and fitting engagement

Mounting datums

Hole pattern, datum scheme and tool access

Bores and service access

Passage geometry, tool access and cleaning scope

Final condition

Flatness, masking, protected interfaces and inspection state

Resolve 6 Design Risks Before Your Order

Resolve connections, routing, tests, wetted compatibility, cleanliness and approval ownership before release.

Connections and seal state

Specify mating threads, sealing geometry, selected fittings, seal materials, assembly instructions and any defined tightening requirements. Record the actual supplied connection state rather than inferring compatibility from a matching thread name.

Your input

Controlled drawing and the relevant service conditions.

Your acceptance

Agreed method, inspection state, limits and required records.

Illustrative connections and seal state review for cooling-loop components concept, not documentary company or customer photography

Illustrative engineering concept

5 Checkpoints from Drawing to Repeat Supply

Drawing review

Confirm revision, interfaces and operating inputs.

Route review

Agree materials, joining and final machining.

Sample build

Review the finished component and assembly fit.

Agreed checks

Assess specified dimensions, joints and test records.

Production release

Release the accepted revision, packaging and repeat-order scope.

Approve Your Delivered Assembly State and Required Records

Illustrative cooling loops & assemblies dimensional inspection concept, not a customer part

Illustrative component concept

Connect each supplied part, hose, fitting and seal to the released bill of materials, routing layout and agreed final condition. Your liquid cooling loop assembly quote should separate manufacturing, purchased components, assembly, cleaning and specified tests. Keep the accepted component loop distinct from pump selection, controls, hydraulic validation and complete-system thermal approval.

  • Material identity and drawing revision
  • Mounting datum faces, mounting and interface dimensions
  • Specified joining and test evidence
  • Connection protection, packaging and shipment release
Review quality requirements →

Match Your Loop to Its Installed Assembly

These are review contexts for defined component loops, not complete qualified systems, customer installations or confirmed performance envelopes.

Illustrative supported component loop in a server tray integration fixture concept, not documentary company or customer photography

Server tray loops

Review contact hardware, hose restraint and service removal.

Rack connections

Match selected fittings and manifold interface positions.

Prototype fixtures

Confirm the released BOM and routing before repeat supply.

Cold-plate links

Define installed hoses, seals and acceptance state.

Manifold branches

Identify the supplied branch connections and test boundary.

Replacement sets

Match exact revisions, installed lengths and packaging.

Integration handover

Separate assembly records from complete-system approval.

Validation samples

State fluid, flow, temperature and measurement locations.

Review CDU component boundaries →

6 Inputs for Your Cooling Loops & Assemblies Quote

  1. Controlled BOM, part drawings + revision
  2. Selected hoses, fittings, seals + supplier specifications
  3. Installed routing, lengths, restraints + service envelope
  4. Coolant, wetted materials + cleaning acceptance
  5. Delivered connection state + specified leak/pressure checks
  6. Prototype/repeat quantities + reports and validation owner

Ask your quote to separate component manufacturing, joining, finishing, inspection and any independently agreed validation. The drawing review confirms availability, quantities and delivery scope.

Answers Before You Specify

What bill of materials is needed for a cooling loop assembly quote?

List every supplied part, hose, fitting, seal, plug and bracket with its specification, part number, revision and quantity. Include routing drawings, installed lengths, final condition, required records and anything supplied by another party.

Can a cooling loop prototype be supplied without pumps and controls?

Define the prototype boundary in the quotation. A component loop may contain the agreed cold plates, manifold, hoses, fittings and brackets while excluding pumps and controls. Availability and assembly scope require drawing review; the complete system has separate integration and validation responsibilities.

What is included in a cooling loop assembly leak test?

Specify the actual assembly, fittings, seals and plugs, the test method and medium, conditions, leakage limit, duration and supplied record. State whether the check covers a bare component, defined subassembly or final delivered loop.

Who approves cooling loop flow and thermal performance?

Name the system or validation owner and agree the test configuration, fluid, inlet temperature, flow, pressure measurement locations, heat inputs and temperature limits. Manufacturing inspection or a leak check does not by itself establish hydraulic or thermal performance.

How should hose routing be released?

Use the selected hose and fitting specifications, installed lengths, approved bend requirements, restraints, keep-outs and service motion. Review fitting operation, removal access and nearby edges with the actual assembly.

Which records should follow your supplied loop?

Agree the BOM and drawing revisions, material and purchased-component identity, assembly state, cleanliness, dimensional or installation checks and specified test reports. Define who accepts the supplied loop and who validates the complete system.