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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USA Lab 1/8" FNPT to 3/8" Barb Tee for DigiVac Bullseye Gauge
USA LabDVTEE$29.95The USA Lab 1 8 FNPT to 3 8 Barb Tee allows users to connect a Digivac Bullseye gauge in-line. This small piece can provide versatility to any system and allows users to read vacuum level in-line with ease... -
USA Lab KF to Tri-Clamp Adapters
USA LabKF-TC$25.00 - $38.99KF Vacuum to Tri-Clamp Adapter Easily connect your vacuum equipment to sanitary process systems with our KF (Kwik-Flange) to Tri-Clamp (TC) adapters. These precision-machined fittings allow seamless transitions between KF vacuum flanges KF25 &... -
USA LAB KF25 90 Degrees
USA LabKF2590$25.00These KF-25 90 degree elbow vacuum fittings follow ISO-KF standards and have a flange size of NW-25.These stainless steel elbow fittings are commonly used to build foreline vacuum plumbing and process systems.They are particularly made of corrosive... -
KF-25 to KF-25 x 1/8" FNPT Adapter
USA LabKF25X238$25.00Our USA Lab KF-25 adapter is specifically designed to connect a Digivac Bullseye Vacuum Gauge to systems while reducing leak points on the system. Our USA Lab KF-25 Fitting Adapter is made of 304 Stainless Steel KF-25 to KF-25 x... -
USA Lab 1/8" FNPT to KF25 for DigiVac Bullseye Gauge
USA Lab18TOKF25$24.95The USA Lab 1/8" FNPT to KF25 allows users to connect a Digivac Bullseye gauge in-line or directly to their vacuum pump. This small piece can provide versatility to any system and allows users to read vacuum level in-line or directly at the pump with... -
USA Lab KF25 to Male JIC Adapters
USA LabKF25-JIC$29.99 - $39.99.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 KF to KF Adapters
USA LabKF-KF$34.95.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 KF25 Nipple various Sizes
USA LabKF$20.00 - $45.00Our USA Lab KF25 Nipple Tube comes in various lengths to help you customize your system. Our KF 25 Nipple is made from 304 Stainless Steel. -
Stainless Steel KF25 to 5/8" 16mm Barb Fitting
USA LabKF25X58BARB$19.95New Our KF25 to 5/8" 16mm Barb Fitting is constructed with stainless steel for a long lasting, durable fitting. Style: KF25 Barb Size: 5/8" or 16mm SKU: N72 For Technical Support, Questions, or Other Issues Please... -
Stainless Steel KF40 to 3/8" Barb Fitting
USA LabKF40BARB$19.00New Our KF40 to 3/8" 10mm Stainless Steel Barb Fitting offers a long lasting, durable fitting. For Technical Support, Questions, or Other Issues Please Email or Call Us! -
Vacuum Pump Clamp - KF16, KF25 & KF40
USA LabVPC$15.00Our KF Wing Nut Clamps are constructed to be durable and easy to use. Order your Vacuum Pump Clamp today! For Technical Support, Questions, or Other Issues Please Email or Call Us! -
Stainless Steel KF16 to 3/8" 10mm Barb Fitting
USA LabKF16X38BARB$14.95New Our KF16 to 3/8" 10mm Barb Fitting is constructed with stainless steel for a long lasting, durable fitting. Style: KF16 Barb Size: 3/8" or 10mm SKU: N74 For Technical Support, Questions, or Other Issues Please...
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
