Famous Durability Deep Vacuum to 10-4 torr Low RPM for cooler operation Address a wide variety of laboratory vacuum needs with these rugged oil-seal pumps. Use DuoSeal vacuum pumps for Schlenk drying manifolds, freeze drying, vacuum ovens, glove boxes, degassing, concentrations,…

High contamination tolerance Ultimate vacuum <0.001 Torr Low RPM for long service life DuoSeal Vacuum Pumps are known for their ruggedness world-wide. These pumps have large oil reservoirs to dilute contaminants. Low pump rpm to reduces friction and wear while minimizing…

The Welch exhaust silencer kit is the perfect kit to have in jobsites as well as in construction sites for the urgent repair, maintenance and monitoring of vacuum pumps. It contains all the necessary tools that are required to keep the pumps running.

The Welch cut length vacuum hose measuring 3/16 Inch x 13/16 Inch x 5 Feet, is suitable for use with vacuum pump. It ensures smooth functioning and long lasting usage. This accessory is made of sturdy material which offers enhanced durability.

The Welch NW 16 acid trap adapter kit is designed to use as an accessory to vacuum pumps and is a must-have tool to have in any jobsite and construction environments.

The Welch beige 5 Feet vacuum hose is mainly used as a power source in automotive industries for various products such a vacuum brake booster, windshield wipers PCV valve, heater control valve, EGR valve and HVAC controls.

Autoclavable receiver High flow Bleach resistant construction Cell culture stations are a portable solution for aspirating tissue culture samples. Unit will shut off automatically when 1.2 L collection receiver is full. All wetted parts are treated for corrosion protection from…

Welch Standard Duty* vacuum pumps use dry, oil-free WOB-L® Piston technology to deliver industry-leading, strong pumping dynamics that support filtration, drying, aspiration, parts forming, and other rough vacuum applications. There are 17 models available, with free air displacement from 0.4 cfm…

Diaphragm pumps for chemical applications - type MPC - are chemically compatible and resistant to aggressive solvents and acid vapors which are common in laboratories. The diaphragms are made out of PTFE. The pump and connection heads are carbon fiber reinforced. Their electrical conductivity…

The Welch belt kit is the perfect kit to have in jobsites as well as in construction sites for the urgent repair, maintenance and monitoring of vacuum pumps. It contains all the necessary tools that are required to keep the pumps running.

The Welch large interconnect kit includes all the necessary repair tools and accessories that are required to keep the ovens in pristine working conditions.

Welch GEM® Pumping and Trapping Fluid is a specially formulated paraffin based hydrocarbon oil for use in the GELMASTER™ gel-drying system. The blue color of the trapping fluid makes it easy to distinguish from the trapped condensate when draining the system. The trapping fluid can be used…

The Welch major repair kit contains shaft seal, intake screen, gaskets, springs, valves and spring holders, large and small metal vanes. This kit is compatible to use with 1376 vacuum pumps.

The Welch seal kithas specially formulated design and is a critical item to have in chemical laboratories to enhance the performance of various experiments and analysis.

ChemStar Belt-driven vacuum pump is designed to tolerate harsh chemical contamination. Vital pump parts are corrosion resistant. The large oil reservoir with PTFE surfaces dilutes contamination and the low pump rotational speed lessens friction to reduce operating temperature and chemical effects.…

The Welch 5/8 Inch mechanical seal kit is made from strong neoprene that ensures a leak-proof seal. This kit is compatible to use with 1392, 1400, 1410 pumps.

Welch Belt-drive vacuum pumps are known for their ruggedness world-wide in the most demanding applications.

The Welch 3/4 Inch mechanical seal kit is made from strong neoprene that ensures a leak-proof seal. This kit is compatible to use with 1402, 1376, 1380 pumps.

Use Welch ProBoost in conjunction with a backing pump like the CRVpro to get deeper vacuum and higher flow. High Vacuum to 10 - 5 torr Use with high vacuum and Schlenk lines Employs air cooled diffusion pump Easy Attachment to backing pump Welch ProBoost is an air-cooled…

DirecTorr Gold oil is a synthetic hydrocarbon oil put through a double molecular distillation process. Gold oil is extremely stable under high temperature, has excellent resistance to chemical attack and provides superior protection for the pump's internal metal components. Recommended for…

Exhaust oil recyclers are recommended for vacuum systems with continuous pressure of 1 torr (1 mm Hg) or higher.

The Welch diaphragm pump two-head service kit is a perfect accessory to have in any chemical laboratories. This kit is compatible to use with MPC 301 Zp Ex 2-Head hold back pump (HBP) and diaphragm pumps.

The Welch pump V-belthas specially formulated design and is a critical item to have in chemical laboratories to enhance the performance of various experiments and analysis.

Welch Major repair kit includes everything in minor repair kit plus large and small metal vanes for use with Duoseal® vacuum pumps.

Handheld Vacuum Gauges - Monitor Multipoint Vacuum Levels. Quick-connecting and Precise; Mercury-Free. Gain insight into your vacuum application with these portable, mercury-free gauges. Welch precision vacuum gauges are easy to connect - perfect for dynamic monitoring or leak troubleshooting.…

Welch Minor repair kit includes shaft seal, intake screen, gaskets, springs, valves and spring holders for use with Chemstar® vacuum pumps.

Welch Belt-drive vacuum pumps are known for their ruggedness world-wide in the most demanding applications.

The compact Model 1640 Vacuum Controller regulates you’re the vacuum level of your application - precisely, conveniently, and without using precious bench space. Vacuum level can be regulated from 2 Torr to atmospheric pressure, ±1 Torr. Use Model 1640 for fine control of rotary…

Welch Stainless steel centering ring with o-ring.

The Welch exhaust silencer has a sturdy and impact-resistant construction for added durability. It is compatible to use with 2561 pumps in jobsites and construction sites.

The Welch vacuum regulator kit is useful for controlling, stabilizing and monitoring of vacuum devices in commercial as well as residential environments.

The Welch CRVpro8 Chem is effective for freeze drying or concentration of samples using a lyophilizer, including harsh chemicals such as TFA, Acetonitrile, HBr and others. These chemicals quickly attack the vacuum pump oil of unprotected vacuum pumps. CRVpro8 Chem is engineered to better combat the…