Find high-quality vacuum fittings for your laboratory experiments and industrial processes. Upgrade your system with reliable fittings from USA Lab today!
Products List
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Stainless Steel KF25 to 1/2" 12.7mm Barb Fitting
USA LabKF25TO12BARB$14.95New Our KF25 to .5" 12.7MM Stainless Steel Barb Fitting is constructed to be long lasting and durable. Style: KF25 Barb Size: 1/2" or 12.7MM SKU: N71 For Technical Support, Questions, or Other Issues Please Email... -
Stainless Steel KF25 to 3/8" 10mm Barb Fitting
USA LabKF2538BARB$14.95New Our KF25 to 3/8" 10mm Barb Fitting is constructed with stainless steel for a long lasting, durable fitting. Style: KF25 Barb Size: 3/8" or 10mm SKU: N70 For Technical Support, Questions, or Other Issues Please... -
USA Lab KF End Cap - KF16, KF25 & KF40
USA LabENDCAP-KF$10.00 - $12.00.usalab-prod{--accent:#13a8b6;--ink:#0f1b2d;--muted:#64748b;--card:#f7f9fc;--ring:#e6ecf2;font-family:inherit} .usalab-prod *{box-sizing:border-box} .usalab-prod h2,.usalab-prod h3{margin:0 0 .5rem;color:var(--ink);line-height:1.2} .usalab-prod... -
USA Lab 8MM Rubber Vacuum Hose Tubing - Fits 5/16" to 3/8" Connections - 1FT
Unbranded/Generic8MMHOSE-1FT$6.00Rubber Vacuum Tubing | USA Lab *This item is purchased in 1 foot sections* Our 8mm Rubber Vacuum Hose is designed for durability and reliability in demanding vacuum applications. Crafted from high-quality gum rubber, this hose features a robust and... -
Aluminum KF40 Vacuum Pump Flange Centering Ring
USA LabKF40RING$5.00Our KF40 Flange Centering Ring is constructed with aluminum and features a rubber O-ring for a long-lasting, durable seal. Style: KF40 For Technical Support, Questions, or Other Issues... -
Aluminum KF16 Vacuum Pump Flange Centering Ring
USA LabKF16RING$5.00Our KF16 Vacuum Pump Centering Ring is constructed with aluminum and features a rubber O-ring for a long-lasting, durable seal. Style: KF16 flange For Technical Support, Questions, or Other Issues Please... -
Aluminum KF25 Vacuum Pump Flange Centering Ring
USA LabKF25RING$5.00Our KF25 Centering Ring is constructed with aluminum and features a rubber O-ring for a long-lasting, durable seal. Order your aluminum vacuum pump flange today. Style: KF25 flange For Technical Support, Questions, or Other...
Vacuum Fittings From USA Lab
Parts That Keep Your Vacuum System Sealed and Running
Vacuum fittings may look simple, but they're the backbone of every vacuum system. They connect your pumps, glassware, and tubing so you get a tight seal and consistent performance. At USA Lab, you'll find a full range of fittings all built to keep your system leak-free and easy to use.
Features at a Glance
Vacuum-Rated Seals
Each fitting is tested under load to maintain reliable, leak-free performance.
Wide Compatibility
Fits with common vacuum pumps, systems, and lab glassware.
Multiple Standards Available
Choose from KF, ISO, and Tri-Clamp fittings to match your setup.
Compare Vacuum Fittings
| Fitting Type | Size Range | Best For | Key Features |
|---|---|---|---|
| KF/NW | NW16 – NW50 | General lab use | Quick clamp, easy to use |
| ISO | ISO-KF / ISO-LF | Large-scale setups | Rugged, industrial-grade |
| Tri-Clamp | 1.5" – 4" | Extraction / sanitary work | Smooth, easy-clean design |
| Other Connection Parts | Multiple | Mixed setups | Clamps and center rings, adapters and reducers, vacuum hoses and tubing connectors |
Easy to Use and Maintain
- Quick assembly — KF and Tri-Clamp connections make swapping or expanding your system fast.
- Strong support — ISO fittings provide the durability you need for larger setups.
- Low maintenance — Stainless steel and high-quality seals reduce upkeep and maximize uptime.
Match the Right Fitting to Your Work
- Need frequent assembly/disassembly? → Go with KF/NW fittings.
- Scaling up to larger systems? → Choose ISO fittings.
- Working with sanitary or extract setups? → Use Tri-Clamp fittings.
- Joining different parts together? → Grab the right adapter or reducer.
Why Choose USA Lab Vacuum Fittings
- Wide selection of KF, ISO, and Tri-Clamp parts.
- Affordable pricing with no hidden markups.
- Ships fast from our U.S. warehouse.
- Backed by real support from lab equipment pros.
Equipment That Works With Your Vacuum Fittings
Complete your vacuum line with parts and tools that keep your system running smoothly:
- Vacuum pumps to power your system
- Cold traps to protect your pump while collecting solvents and vapors
- Glassware to connect to rotary evaporators, distillation setups, or filtration systems
