Sanjay Tools & Accessories Private Limited
Sanjay Tools & Accessories Private Limited
Pimpri Colony, Pune, Maharashtra

Grease Gun Coupler

We are a leading Wholesale Distributor of grease gun coupler from Pune, India.

Grease Gun Coupler

Grease Gun Coupler
  • Grease Gun Coupler
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Product Details:

Coupler Thread1/8 inch NPT female thread.
Diameter3/5 in (16 mm), 1mm larger than standard coupler
Dimensions88mm x 16.4mm x 41mm(LxWxH)
Grease Gun CompatibilityWorks with all grease gun types pneumatic, manual, and electric.
Lock on MechanismFour hardened steel jaws are resilient under high pressure. Patent protected
Max Pressure10,000 psi (690 Bar)
PatentUS Patent, 8,955,544
SealDurable nitrile rubber seal for longevity under high pressure
Weight4 oz. (100 grams)
Zerk CompatibilityFits all DIN and SAE specification Zerks (grease nipples)

The Lock N Lube Grease Coupler is compatible with all grease guns and grease fittings. It does not leak once locked on and will not pop off under pressure.

No hands are needed to align or hold the coupler in place while greasing. You have both hands free to operate your grease gun and know that the grease will go in, not on, your machine.

It has a unique sliding sleeve, activated by a thumb lever. The sleeve locks the four spring-steel jaws onto the Zerk fitting, and releases the jaws by pushing on the thumb lever.

When the jaws are locked onto the Zerk, a leak-proof seal is created. The locked connection is positive and rigid preventing the coupler from coming loose and breaking the leak-proof seal.

If a fitting becomes pressurized, especially a recessed one, just depress the thumb lever and release the coupler.

The LockNLube® Grease Coupler is fully rebuildable. If it starts to leak, you simply replace the seal and jaws and it is as good as new. See our tutorial here.

We include a free replacement seal and jaws with every coupler that we sell.

Additional Seal Kits are also available from our store.

  • WIll not leak once locked on.
  • Hands-free does not release under pressure
  • Rated up to 10,000 PSI.
  • Will not leak once locked on.
  • 1/8″ NPT thread. Compatible with all grease guns.
  • Works on all Zerk fittings, SAE and metric.
  • Comes with free replacement seal and jaws. Fully rebuildable.
  • NEW: easily releases from clogged grease fittings, even under pressure.



  • Works with all grease gun types: pneumatic, manual and electric.
  • Works on all Metric and SAE specification Zerks (grease nipples).
  • Fits 1/8-inch NPT thread.
  • Works with all grease gun manufacturers, including: Lumax, Alemite, Plews lubrication (Edelmann), Grainger, SKF, Macnaught, ADT, Milwaukee, John Deere, Wilmar, Legacy, Allstar, Sealey, Draper and many others.
  • Simply depress trigger to release, even under pressure.
  • No need to hold while greasing. Lock-on and free up both hands to operate your grease gun.
  • Durable nitrile rubber seal for longevity under high pressure.
  • Four hardened spring steel jaws are resilient under high pressure.
  • Check valve to reduce leakage.
  • Suitable for high-pressure, heavy duty applications.

Hands-Free, Leak-Free Greasing Is A Reality:

  • The LockNLube Grease Coupler is rated to 10,000 PSI (690 Bar) and will not release under pressure. No hands are needed to align the coupler or keep it attached. No leaking grease, and no problem using both hands to pump your grease gun, or move around the machine.
  • Eliminate frustration from machine maintenance by using the only grease coupler that is guaranteed not to leak and not to pop off under pressure.


Grease Smarter, Not Harder:

  • The LockNLube Grease Coupler will work to its full potential, even at extreme angles. Once it is locked on you have the peace of mind that it will not pop off, will not leak, and grease is going into the bearings that need it, and not onto your machine. Stop fighting with old greasing equipment that can’t be trusted and upgrade to the grease coupler that almost makes greasing fun.



  • LockNLube provides a full 30-day money-back guarantee on all products purchased from its website. If you are dissatisfied with your purchase, you can return it to us by shipping the item back within 30 days of purchase. Once we receive your return, we will refund you the full purchase price of the item.

    Additional Information:

    • Delivery Time: Immediate dispatch possible
    • Packaging Details: Length: 3.5" Weight: 100gm Diameter: 16mm
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    Rohan Gulumbe (Sales Engineer)
    SP-106, S Block, Off Telco Road, Indrayani Nagar MIDC, Bhosari
    Pimpri Colony, Pune- 411026, Maharashtra, India

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