Neolube has extensive applications and successful bonding properties. It is, however, important to know the technical features of a product, especially one with a strong composition such as with Neolube. This will ensure that you apply it correctly for optimal use and will prevent any current or future property damage (or frustration) from occuring. Proper use will also ensure your safety and the safety of those around you. We have a handy Neolube tech guide for you!

Neolube 100 and its composition

NEOLUBE NO. 100 is a high-performance pipe thread sealant for locking and sealing metal pipes and fittings. This sealant is a creamy paste formulated to impart lubricity for assembly purposes, to provide immediate low-pressure sealing, and to cure to a solid for sealing and securing threaded pipe connections. This product has excellent solvent resistance and continuously withstands temperatures to 300°F (149°C). NEOLUBE® No. 100 does not contain Teflon.

NEOLUBE® No. 100 Is Not Normally Recommended For Use On Plastics (Particularly Thermoplastic Materials Where Stress Cracking Of The Plastic Could Result). However, Users Are Recommended To Confirm Compatibility With Such Substrates.  

NEOLUBE® No. 100 Is Not Recommended For Use In Pure Oxygen And/or Oxygen Rich Systems And Should Not Be Selected As A Sealant For Chlorine Or Other Strong Oxidizing Materials. For Safe Handling Information On NEOLUBE® No. 100, Consult The Safety Data Sheet.

Typical Applications

NEOLUBE® NO. 100 PIPE THREAD SEALANT is recommended for sealing thread fittings in fossil fuel, solar, and hydropower plant piping systems. Application areas include:

  • Instrumentation
  • Hydraulics
  • Pumps and Valves
  • Fuel Oil Piping
  • Water/Coolant Systems
  • Compressors
  • Condensors
  • Gas Lines
  • Controls
  • Electrical Conduit
  • Low-Pressure Steam Lines        
  • Rad-Waste Systems

Typical tech properties (uncured material)

  • Chemical Type: Methacrylate Ester
  • Solvent Content: None
  • Appearance (Uncured): Smooth, creamy, off-white paste
  • Cure: Anaerobic
  • Technology :Acrylic
  • Components: One Component – Requires No Mixing
  • Specific Gravity: @ 25°C 1.08
  • Flash Point: (TCC) >199.94°F – >(93.3°C)
  • Toxicity: Low
  • Application: Thread Sealing
  • Strength: Medium
  • Viscosity: Very High, Viscosity, Brookfield – RVF, 25 °C, mPa·s (cP):
  • Spindle 7, speed 2 rpm 300,000 to 900,000



  • K factor (torque/tension) @ 4950 Lbs (bolt load) 3/8 x 16 Grade 5 phosphate and oil fasteners
    • 100 treated fastener 0.16
    • Degreased fastener 0.20
    • As-received/oil fastener 0.15

Chemical Purity

  • Halogen Content – 200 ppm (maximum)
  • Chlorine Content – 200 ppm (maximum)
  • Sulfur Content – 1500 ppm (maximum)

This pipe sealant contains no directly added Lead, Zinc, Mercury, Antimony, or Copper. The elements mentioned above are leachable or could be released by the breakdown of the sealant under expected environmental conditions.


  1. Optimum results will be obtained on clean fittings. Clean all surfaces (external and internal) with reagent grade toluene, acetone, isopropyl alcohol, or methyl ethyl ketone, and allow to dry.
  2. Apply a 360° bead of NEOLUBE® NO. 100 to the leading threads of the male fitting, leaving the first thread free. Force the material into the threads to thoroughly fill the voids. For bigger threads and voids, adjust product amounts accordingly and apply a 360° bead of NEOLUBE® NO. 100 on the female threads also.
  3. Using accepted trade practices, assemble and wrench tighten fittings following the manufacturer’s recommendations.
  4. Properly tightened fittings will seal instantly to moderate pressures. For maximum pressure and solvent resistance, allow NEOLUBE® NO. 100 to cure a minimum of 24 hours.
  5. NEOLUBE® NO. 100 has been formulated to cure without heat or activators on stainless steel or other inactive surfaces. Higher temperatures will speed the cure; lower temperatures will retard the curing process.
  6. The product cures when confined in the absence of air between close-fitting metal surfaces and prevents loosening and leakage from shock and vibration.  


Environmental Resistance

The following characteristics of NO. 100, PIPE THREAD SEALANT have been tested by an independent laboratory.

  • Calculated estimates under constant temperature and radiation exposure reported the following judgments:
    • The product will provide a 40-year service life at ambient temperature not exceeding 122°F (50°C). @
    • 10-year performance life can be expected for service not exceeding 200°F (94°C). @
    • The pipe thread sealant can be safely used to seal threaded pipe joints for approximately one year at a temperature of 250°F (131°C).  Under high radiation and at temperatures greater than 250°F, long-term service life has not been predicted accurately. @
    • Under non-nuclear (standard radiation) environments, the thermal stability of this high-purity PIPE THREAD SEALANT NO. 100 can be expected at temperatures up to 400°F.
  • Product is suitable for sealing low-pressure steam, not exceeding 300°F (149°C).
  • Where aqueous washing systems are used to clean the surfaces before bonding, it is vital to check for compatibility of the washing solution with the adhesive. In some cases, these aqueous washes can affect the cure and performance of the adhesive.


Solvent Resistance

Suitable for use with piping systems containing air, water, gas, hydrocarbons (aromatics), boric acid, alcohols, halocarbons (perchlorethylene, trichlorethylene), organic acids (citric and acetic), mild mineral acids and bases (diluted and cold), and aqueous solutions of lithium salts, hydrazine, and mercaptans.

Suitable Piping Materials

NEOLUBE® NO. 100 is recommended for use on Iron, Magnesium, Bronze, Nickel, Zinc, Aluminum, Austenitic, Stainless Steel, Carbon Steel, Monel, Cadmium, bright plating, anodized surfaces, passivated surfaces, and Titanium fittings. Elevated temperatures will cause threaded Copper to oxidize. Therefore, high-reliability Copper piping should be pickled before using any sealant.


Physical Properties:  

  • Time to achieve full strength on steel: 24 Hours @72°F (25°C) Minimum
  • Coefficient of Thermal Expansion, ISO 11359-2, K-1: 0.1
  • Coefficient of Thermal Conductivity, ISO 8302, W/(m·K): 0.1
  • Specific Heat, kJ/(kg·K):  0.3



Adhesive Properties:

  • After 24 hours @ 25 °C Breakaway Torque, ISO 10964: 3/8 x 24 steel nuts (grade 2) and bolts (grade 2): N·m ≥0.9 ( (8)
  • Cured for 24 hours @ 93 °C, tested @ 25 °C, Breakaway Torque, ISO 10964: 3/8 x 24 steel nuts (grade 2) and bolts (grade 2): N·m ≥2.3 ( (20)



Fittings assembled with NEOLUBE® NO. 100 may be disassembled with standard hand tools. Where hand tools do not work because of excessive engagement length or large diameters (over 1″), apply localized heat to approximately 250°C and disassemble while hot.  Cured products can be removed with a combination of soaking in a solvent and mechanical abrasion, such as a wire brush.



NEOLUBE® NO. 100 can be used with many metals, glass, ceramics, and thermoset plastics such as phenolic, polyester, etc.  NEOLUBE® NO. 100 will soften and sometimes craze thermoplastics, including ABS, polycarbonate, vinyl, methacrylates, etc. They will also soften varnish and lacquer finishes. Most baked enamel finishes are not harmed by initial contact but should be wiped clean within an hour of application. The cured sealant will not affect any of these materials.



  • Store material in the original container. Maintain in a cool, dry location.  
  • Optimal Storage:  8°C to  21°C (46°F to 70°F).  Storage below 8°C (46°F) or greater than 28°C (82°F) can adversely affect product properties.  
  • Material removed from containers may be contaminated during use. Do not return the product to the original containers. The information supplied is believed to be reliable for the time encompassed by the shelf-life period. Huron cannot assume responsibility for the product that was contaminated or stored under conditions other than those previously recommended.   NEOLUBE® NO. 100 has a shelf life of 24 months from the date outlined on the Certificate of Quality Conformance. Refer to the Certificate of Quality Conformance for the expiration date. 


  • Eye Irritant; may irritate sensitive skin. Contains methacrylate esters. In case of eye contact, flush with water for fifteen minutes; get medical attention. Wash after the skin contact.
  • Excessive or repeated skin contact with this sealant may cause skin irritation. In case of irritation to sensitive skin, discontinue contact with the product. If a skin reaction occurs, discontinue use and consult a physician. To avoid skin contact, use the applicator nozzle provided. Keep material away from children. Use per a Safety Data Sheet.
  • Use the customary safeguards in storing, handling, and applying materials of this type. A Safety Data Sheet is furnished with each shipment.



  • 1/8″ Pipe750 Pipes
  • 1/4″ Pipe500 Pipes
  • 3/8″ Pipe300 Pipes
  • 1/2″ Pipe150 Pipes
  • 3/4″ Pipe – 100 Pipes
  • 1″ Pipe50 Pipes


Product certification is available for each batch and shipment. NEOLUBE® products are not considered safety-related goods. As such, they are not designed, fabricated, handled, shipped, stored, etc., under a quality assurance program that complies with the requirements of 10CFR50, Appendix B, 10CFR21, or ANSI.

The data contained herein are furnished for information only and are believed to be reliable. However, we cannot assume responsibility for the results obtained by others over whose methods we have no control. Therefore, it is the user=s responsibility to determine suitability for the user=s purpose of any production methods mentioned herein and to adopt such precautions as may be advisable for the protection of property and persons against any hazards that may be involved in the handling and use thereof.

In light of the foregoing, Huron Industries, Incorporated specifically disclaims all warranties of merchantability or fitness for a particular purpose arising from the sale or use of Huron Industries, Incorporated=s  products. Huron  specifically disclaims any liability for consequential or incidental damages of any kind, including lost profits. The discussion herein of various processes or compositions is not being interpreted as representation that they are free from domination of patents owned by others or as a license under any Huron Industries=s patents which may cover such processes or compositions.  We recommend that each prospective user test the proposed application to determine its suitability for the purposes intended prior to incorporating any product or application in its manufacturing process using this data as a guide. This product may be covered by one or more United States or foreign patents or patent applications. NEOLUBE® is a Registered Trademark of Huron Industries, Inc.

Revised: 12/21/2022 09100Data

For further info or clarification on our Neolube tech guide and products, contact us today!