EverSeal 183 Pre Applied Thread Sealant for Gases, Refrigerants, Propane & More

EverSeal 183 pre applied liquid thread sealant for gases and refrigerants
Classified UL and CSA logos
EverSeal 183 pre applied liquid thread sealant for gases and refrigerants logo
EverSeal 183 Pre-Applied Liquid Thread Sealant is the water-based, non-hardening, non-toxic, thread sealant with UL approval for LP Gas Systems, including Methane, Natural Gas, Butane and Propane. EverSeal 183…Seal it Right When You’re Ready to Go.

Features & Benefits:

  • Superior to other pre-applied sealants
  • Prevents vibration loosening
  • Does not plug up filters, valves, or gauges
  • Seals pipes up to 2″ NPT
  • Low locking strength provides for disassembly
  • No harmful solvents and no VOC’s
  • lnert to most industrial chemicals and hydrocarbons (gasoline, diesel fuel, etc.), most acids, chemicals, solvents, and gases.
EverSeal 183 pre applied liquid for fittings and threaded pipe

Industries Served

Liquified Propane Gas (LPG), Natural Gas, Autogas, Residential Appliances, Fluid Control, Petroleum.


Most metal threads, steel, aluminum and brass. Ideal for fittings, pipes, valves, gauges, and connections in hydraulic, pneumatic, lubrication, steam, and refrigerant systems.

Typical Uses

Pre-applied liquid thread sealant is the water-based non-toxic thread sealant with UL approval for use with fittings and threaded pipe in high pressure LP gas systems, including methane, natural gas, butane and propane. Also approved for use with refrigerant R134a.

Product Specifications

DirectionsAlways mix well prior to use, may only be applied to threads in good condition that are dry, clean and free from all oils or other type residues. Sealant must be fully cured prior to assembly or testing for a minimum of 24 hours in ambient conditions.
SafetyContains no lead, is non-toxic, not a skin sensitizer, non-corrosive, non-radioactive, non-explosive. See SDS for more information.
Available SizesES11 - 1 liter
ES10 - 10 liter
ES15 - 152 liter
Storage60° to 80°F (15° - 27° C)

For best results and a longer shelf life, EverSeal 183 should be stored at moderate temperatures under 80°F. Do not return any unused material to the original container.
PreparationEverseal 183 may thicken and/or appear to separate. Stirring or shaking the sealant will restore it to its original consistency. Everseal 183 should not be exposed to continuous open air and should be transferred into an air-tight vessel once mixed. Parts to be coated with Everseal 183 must be completely clean and free of thread cutting oils, parts washing chemicals, or other residues.
ApplicationEverSeal 183 should be applied 1-2 threads back from the end and a minimum of 3 middle threads. The sealant should be applied from the root of the threads out to the crown and allowed to dry back. Take care not to apply too much sealant and never apply additional sealant over non-cured sealant.
Clean UpTub O’Towels, hot soap & water, or alcohol.
UL ClassificationButane, Methane, Natural Gas, Propane and R134a refrigerant
CSA ClassificationButane, Methane, Natural Gas and Propane
Operating Temperature-65°F to 300°F (-54°C to 149°C)
Dry Film PropertiesTough Coating
Cleaning (Uncured / Cured)Soap and Water / Methanol
Pressure RangeTo 10,000 psi ½” NPT
To 3,000 psi 2” NPT
Flash Pointover 200°F (93°C)
Specific Gravity1.05 (9/cc) 35,000
Viscosity35,000-50,000 cps
Speed of Cure
(70°F 50% RH)
Dry to touch – 1 hr
Full - 24 hrs
Force – 20 min @ 120°F
Shelf Life (Uncured / Cured)1 Year / Unlimited

LP & Natural Gas Systems

Fitting Diameter
Per Liter
Number of Fittings
Per Liter
1/8-inch / 3 mm20,000
1/4-inch / 6 mm8,928
3/8-inch / 10 mm6,452
1/2-inch / 13 mm3,509
3/4-inch / 19 mm2,500
1-inch / 25 mm1,379
Member NPGA logo

EverSeal drying times may vary with the type of material to which it is applied. The manufacturer recommends that the user perform internal testing to determine the cure conditions required to provide an adequate seal. Federal Process Corporation products are warranted against defects in workmanship and materials. No warranty for merchantability or fitness for a particular purpose shall apply. All warranty claims are limited to replacement of EverSeal at no charge to the customer. Federal Process Corporation is not liable for any damage of any sort including incidental and consequential damages.

This product is not recommended for use in an oxygen system and not as a sealant for chlorine or other strong oxidizing materials. Read all information on labels and Safety Data Sheets prior to use. All products should be tested and evaluated for a particular purpose prior to use.

The information presented is in good faith, but results are not guaranteed. Federal Process has no control of physical conditions surrounding application conditions. Federal Process disclaims any liability for untoward results.

3 Steps to a Superior Seal.



Custom mandrels will accommodate any fitting configuration.



The EverSeal Coating System will apply and properly distribute EverSeal on the fitting threads.



Dry, ship and use the EverSeal coated fittings. The tough coating eliminates special handling requirements while EverSeal ensures a leak-proof installation.

Group of threaded fittings coated in EverSeal
Thred Taper logo
Thred-Tape logo
Gasoila Chemicals logo