Total System Protection


EasySeal Direct Inject

EasySeal Direct Inject

Video Overview



Now made in the U.S.A., EasySeal Direct Inject is the strongest sealant on the market, with over a million leaks sealed. With this new injection system, pumping down the unit is a thing of the past. And now the industry’s leading refrigeration sealant has been combined with UV leak detection dye to give you EasySeal Direct Inject-UV. This product is designed to seal leaks and also show where larger leaks are with the use of the UV Leak Detection Kit (4050-15).

  • Concentrated formula means less material in system.
  • Clear tube so you can see the sealant go in.
  • No need to pump down R-410A units.
  • Perfect for split systems, heat pumps, microchannel coils, packaged units, and mini splits.
  • No injection hose or caulk gun needed.
  • One time use.
  • Use EasySeal Direct Inject-UV Dye (4050-11, 4050-12) with UV Leak Detection Kit (4050-15)
Packaging Size Part Number Additional Info.
EasySeal Direct Inject 4050-08 Treats 1.5 to 5 tons
EasySeal Direct Inject - 6 pc. BULK 4050-07 Treats 1.5 to 5 tons
EasySeal-SS Direct Inject 4050-05 Treats fractional to 1.5 tons
EasySeal Direct Inject-UV Dye 4050-11 Treats 1.5 - 5 tons
EasySeal Direct Inject-UV Dye - 6 pc. BULK 4050-12 Treats 1.5 - 5 tons
UV Leak Detection Kit 4050-15 UV Light and Glasses


This product must be used in accordance to the following directions by HVACR professionals only.

  1. Make sure system is running and low side and high side service ports are properly identified. If unit is a heat pump, be sure it is in cooling mode.
    IT IS IMPORTANT TO FIRST: Connect EasySeal Direct Inject’s female fitting to the suction service port of system. The one way check valve will prevent back flow of refrigerant.
  2. Make sure both valves on manifold gauge set are closed. Connect highside (red) line of manifold gauge set to the high side service port.
    Barely thread the middle manifold hose (yellow) to the male fitting of the EasySeal Direct Inject. Do not thread to the point of depressing the Schrader core.
    Briefly crack open high side manifold valve to purge air out of the yellow hose, close high side manifold valve, then quickly tighten yellow hose fitting to the injector.
  3. Briefly open then close high side valve of the manifold gauge set to allow a little high side liquid to flow through the yellow hose and EasySeal Direct Inject tube.
    With high side valve of the manifold gauge set closed, wait one minute for the yellow hose and EasySeal Direct Inject to equalize to suction pressure.
    Disconnect EasySeal Direct Inject from suction service port and from manifold gauge set. Discard or recycle empty injector.

NOTE: You may also use a refrigerant cylinder to push sealant into system while charging if the system is low on refrigerant. Just connect EasySeal Direct Inject to service port and inject refrigerant through injector into system while charging.

Wear safety glasses. Do not bend, cut or deform EasySeal Direct Inject tube. Be careful not to allow refrigerant to spray on bare skin, as it could cause frostbite

Literature Downloads

Download the product bulletin and other relevant literature here.


Download a low resolution file of the product label here.

SDS Information

Read and understand the product’s Safety Data Sheet for precautionary and first aid information.


esdi; easyseal; easy seal; directinject; direct inject