HCLSK2 2oz HVAC Leak Sealant with 45° Swivel Adapter
MPN: HCLSK2
02-0076-2
Product Summary
FREE SHIPPING on orders over $99 — shipping calculated at checkout
Product Description
HVAC-R refrigerant leak sealant with 45° swivel low-side adapter — pre-charged 2 oz syringe that seals pinhole leaks, porous metal leaks, and micro-leaks in HVAC, refrigeration, and automotive A/C systems. Universal compatibility with HFC, HFO, A2L, and hydrocarbon refrigerants AND all major oil types (POE, PAG, mineral, alkylbenzene).
HCPRO Performance HCLSK2 is a pre-charged 2 oz refrigerant-soluble sealant with anti-corrosion additive package. Compatible refrigerants: R-134a, R-410A, R-22, R-1234yf, R-404A, R-407C, R-290 propane, R-600 butane. NOT for ammonia systems. Compatible oils: POE, mineral, PAG, alkylbenzene. Rated for operation up to 800 PSI. Treats systems up to 6 tons of refrigeration per syringe. Includes 45° swivel adapter for tight low-side service ports.
Who this sealant is for
HVAC technicians chasing slow refrigerant loss on residential split systems and mini-splits. Mobile auto A/C techs sealing leaks without recovering refrigerant. Refrigeration contractors restoring system pressure on walk-in coolers and reach-ins. Fleet maintenance crews keeping commercial A/C units running. Anyone whose customer's system is losing 1–2 oz per week and they don't want a $1,500 compressor replacement.
When to use it
For micro-leaks, pinhole leaks, and porous metal leaks that drop pressure over weeks or months but aren't visually locatable. Screw the 45° adapter onto the syringe, connect to the low-side service port, inject with the system running. No refrigerant recovery required. One 2 oz syringe treats up to a 6-ton system. NOT for mechanical leaks at loose fittings, fractured copper, or split hoses — replace those components.
Why HCLSK2 vs cheap stop-leak products
Cheap stop-leak uses polymer chemistry that hardens throughout the system and clogs TXVs, orifices, and evaporator coils. HCLSK2's refrigerant-soluble formula only reacts at leak points where it contacts atmosphere — the rest of the system stays clean. Anti-corrosion additive prevents the underlying corrosion that caused the leak from spreading. Rated to 800 PSI for R-410A high-pressure systems. Universal oil and refrigerant compatibility.
Available in single 2 oz syringe, 2-pack, 4-pack, and 12-pack at trade pricing. Manufactured in the USA to industry HVAC-R sealant performance standards.
Product Highlights
Technical Specifications
Shipping
Fast Shipping on In-Stock Products - Receive Your Order in 1-2 Business Days.
FREE U.S. shipping on orders over $99
Secure and Fast Shop Process
1-Year Limited Warranty on all products
Warranty returns covered — see our return policy
For additional information please see our Shipping Policy.
Couldn't load pickup availability
Pickup available at 13473 NW 19th LN
Usually ready in 1 hourPairs well with
HCLSK2 2oz HVAC Leak Sealant with 45° Swivel Adapter
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
- FREE SHIPPING for full pallet orders going to zoned industrial addresses within the freight delivery network that have a 48-inch loading dock and access for 53-foot trailers. If you are not sure if your location qualifies for free shipping, please CONTACT US HERE.
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FAQ’s
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Common Questions
Does HCPRO warranty the products?
Yes, we do. We guarantee that our products are free from defects and are fully compatible with the OEM specifications and applications listed on the product label and data sheet. Please see our detailed product warranty here.
Will HCPRO products keep my factory warranty?
Yes, they will. We guarantee that our products are fully compatible with the OEM specifications and applications listed on the product label and data sheet.
Under US law, the OEM cannot void the warranty for using an aftermarket product or require you to use their product to maintain factory warranty. This aspect of warranty law is covered by the Magnuson-Moss Warranty Act of 1975. If you have any issues with a service center or OEM dealership trying to force you to use their products, please contact us.
FAQs
Please read our FAQs page to find out more.
How do I get free shipping?
Parcel Packages: Free shipping on orders of $99 or more.
Palletized Shipments: Free shipping is available for qualifying palletized orders. Further information is available on our Shipping Policy Page.
How do I return an item?
We offer free returns for wrong or defective items within 30 days of purchase. Simply contact our support team to initiate a return if its not possible to do it through your account and order history page.
We will email you a free shipping label for UPS or Fedex once your return is approved.
How do I track my order?
Parcel Package Orders: The tracking information is available in your order history.
Palletized Orders: You will receive an email with a copy of the BOL. Please contact your account representative or message us for further information.
Tax Exempt Orders
Sales tax is automatically charged for orders within the state of Texas.
If your business qualifies for tax exemption, download and fill out tax exemption certificate here and email it to accounting@hcproproducts.com.
You will be contacted afterwards to set up an account.
What should I do for issues with Amazon fulfilled orders?
If you have any problems with an order that Amazon fulfilled, please contact them first. They are responsible for handling all refunds, replacements, or other issues. If Amazon does not resolve the issue, please message us and provide your Amazon order number.